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AI-analyzed release notes for CNCF graduated and incubating projects.

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AllAI & MLCI/CD & App DeliveryKubernetes CoreNetworking & MessagingObservabilityOrchestration & ManagementProvisioning & RuntimeSecurityStorage & Data
Jun 2026Clear ×
NATSv2.14.3Networking & MessagingJun 29, 2026
CHECK 3OTHER 42View full analysis

A maintenance release with a dependency and toolchain update, broad defect corrections, and behavior improvements across authentication, routing, monitoring, clustering, and JetStream. It also removes JSONP monitoring callbacks and addresses MQTT and authorization-related connection and permission handling.

Check if affected (3)

  • securityNats-Trace-Dest publish permission checks for leaf connections

    Applies if you use Leaf connections.

  • securityMQTT subscribe deny rules on retained message and QoS replay paths

    Applies if you use MQTT.

  • breakingThe JSONP callback support in monitoring endpoints, removed

    Applies if you use JSONP callback support.

Source ↗
Istio1.28.9Networking & MessagingJun 24, 2026
ACTION 7CHECK 7View full analysis

A maintenance release with disclosed Envoy security fixes across HTTP/3 processing, protocol handling, filters, decompression, certificates, and statistics. The corrections are available through an upgrade to this release.

Action needed (7)

  • securityhighCVE-2026-48044, Zstd decompressor ratio enforcement

    CVE-2026-48044 fixes memory exhaustion in the Zstd decompressor by enforcing the MaxInflateRatio limit inside the decompression loop.

  • securitymediumCVE-2026-47692, PROXY protocol TLV length validation

    CVE-2026-47692 fixes a length mismatch when passthrough TLVs and added TLVs exceed the maximum length in the PROXY protocol header.

  • securitymediumCVE-2026-47221, HTTP 303 body-less redirect handling

    CVE-2026-47221 fixes a segmentation fault when handling HTTP 303 internal redirects for requests without a body.

  • securitymediumCVE-2026-48090, asynchronous token callback lifetime

    CVE-2026-48090 fixes a callback that could run after the filter was torn down, preventing access to dangling pointers and the resulting use-after-free crash.

  • securitymediumCVE-2026-47778, peer certificate SAN validation

    CVE-2026-47778 fixes validation of a peer certificate's Subject Alternative Name when the SAN contains an embedded NUL byte.

  • securitymediumCVE-2026-48497, query name length checking

    CVE-2026-48497 adds sanity checking for query name length and uses ENVOY_BUG when the check fails, avoiding abnormal process termination.

  • securityGHSA-p7c7-7c47-pwch, QPACK blocked decoding fix

    GHSA-p7c7-7c47-pwch fixes a denial-of-service vulnerability in Envoy's HTTP/3 stack caused by QPACK blocked decoding and unbounded memory growth.

Check if affected (7)

  • securityhighCVE-2026-48743, HTTP/3 headers-only content-length validation

    Applies if you enable envoy.reloadable_features.quic_validate_headers_only_content_length.

  • securityhighCVE-2026-48042, JSON parser nesting depth limit

    Applies if you set envoy.reloadable_features.limit_json_parser_nesting_depth to false.

  • securitymediumCVE-2026-47207, ext_proc server response handling

    Applies if you use the ext_proc server.

  • + 4 more on the release page
Source ↗
Istio1.29.5Networking & MessagingJun 24, 2026
ACTION 4CHECK 11OTHER 5View full analysis

A maintenance release with Envoy security fixes and five ordinary defect corrections. The security fixes require upgrading, while no deprecations or forced operator configuration changes are announced.

Action needed (4)

  • securitymediumCVE-2026-47221 in HTTP 303 internal redirects

    CVE-2026-47221 fixes handling of HTTP 303 internal redirects for body-less requests. The redirect code no longer attempts to drain an unallocated request body buffer.

  • securitymediumCVE-2026-48090 in asynchronous token change callbacks

    CVE-2026-48090 fixes a bug where an asynchronous token change callback could run after the filter was torn down by onDestroy(), causing dangling-pointer access and a crash.

  • securitymediumCVE-2026-47778 in peer certificate SAN validation

    CVE-2026-47778 fixes validation of a peer certificate's Subject Alternative Name when the SAN contains an embedded NUL byte. SAN parsing no longer permits NUL byte truncation to produce incorrect trust decisions.

  • securitymediumCVE-2026-48497 query name length checking

    CVE-2026-48497 adds sanity checking for query name length to avoid abnormal process termination. The check uses ENVOY_BUG when it fails.

Check if affected (11)

  • securityhighCVE-2026-47220 in the %REQUESTED_SERVER_NAME% formatter

    Applies if you configure the %REQUESTED_SERVER_NAME% formatter.

  • securityhighCVE-2026-48044 in the Zstd decompressor

    Applies if you use the Zstd decompressor.

  • securityhighCVE-2026-48743 HTTP/3 headers-only content-length validation

    Applies if you use HTTP/3 and enable envoy.reloadable_features.quic_validate_headers_only_content_length.

  • + 8 more on the release page
Source ↗
Istio1.30.2Networking & MessagingJun 24, 2026
ACTION 12CHECK 5OTHER 7View full analysis

A maintenance release with a changed logging default, operator-facing additions and fixes, and a restriction on pilot-agent metric content types. It also includes Envoy security fixes covering denial-of-service, crashes, validation issues, memory exhaustion, and other vulnerabilities.

Action needed (12)

  • securityhighCVE-2026-47220 crash bug fix

    The Envoy security update fixes the crash bug described by CVE-2026-47220.

  • securityhighCVE-2026-48044 memory exhaustion fix

    The Envoy security update fixes the memory exhaustion vulnerability described by CVE-2026-48044.

  • securityhighCVE-2026-48042 JSON nesting-depth limit

    The Envoy security update limits JSON nesting depth to 1000 through envoy.reloadable_features.limit_json_parser_nesting_depth.

  • securitymediumCVE-2026-47692 bug fix

    The Envoy security update fixes the bug described by CVE-2026-47692.

  • securitymediumCVE-2026-47205 use-after-free crash fix

    The Envoy security update fixes the use-after-free crash described by CVE-2026-47205.

  • securitymediumCVE-2026-48090 asynchronous token callback handling

    The Envoy security update fixes a bug where the asynchronous token change callback could be triggered after the filter had been torn down.

  • securitymediumCVE-2026-47778 Subject Alternative Name validation

    The Envoy security update fixes an issue where Envoy could fail to validate the Subject Alternative Name (SAN).

  • securitymediumCVE-2026-47204 crash and use-after-free fix

    The Envoy security update fixes a crash or use-after-free described by CVE-2026-47204.

  • securitymediumCVE-2026-48497 query name length checking

    The Envoy security update fixes sanity checking of the query name length.

  • securitymediumCVE-2026-47775 padding oracle

    The Envoy security update addresses a padding oracle described by CVE-2026-47775.

  • securityGHSA-p7c7-7c47-pwch denial-of-service fix

    The Envoy security update fixes the denial-of-service vulnerability described by GHSA-p7c7-7c47-pwch.

  • breakingWarn-level message logging

    The message is now logged at warn level.

Check if affected (5)

Source ↗
Envoyv1.38.3Networking & MessagingJun 23, 2026
ACTION 16CHECK 2View full analysis

A maintenance release with multiple disclosed security fixes and a security-related Wasmtime dependency update. It also removes the Intel DLB connection-balancer extension from all builds and disables TLS certificate compression by default.

Action needed (16)

  • securityhighThe com_github_wasmtime dependency update

    The Wasmtime dependency com_github_wasmtime was updated to resolve CVE-2026-47261. The update ships in the WebAssembly build.

  • securityhighREQUESTED_SERVER_NAME crash, CVE-2026-47220

    The REQUESTED_SERVER_NAME crash was corrected in Envoy. The change addresses CVE-2026-47220 and GHSA-j9wh-4qfm-wf2v.

  • securityhighzstd RLE zip bomb, CVE-2026-48044

    The zstd RLE zip bomb issue was corrected in Envoy. The change addresses CVE-2026-48044 and GHSA-m3p9-47wh-88wg.

  • securityhighHighly nested JSON destructor stack overflow, CVE-2026-48042

    The stack overflow in the destructor of highly nested JSON was corrected in Envoy. The change addresses CVE-2026-48042 and GHSA-f24p-rxw2-g6pv.

  • securityhighHTTP/3 to HTTP/1 request smuggling, CVE-2026-48743

    The HTTP/3 to HTTP/1 request smuggling issue involving a headers-only request with a nonzero Content-Length was corrected in Envoy. The change addresses CVE-2026-48743 and GHSA-8phg-2h2q-jgxf.

  • securitymediumAuthz per route crash, CVE-2026-47205

    The Authz per route crash was corrected in Envoy. The change addresses CVE-2026-47205 and GHSA-mvh9-767w-x47j.

  • securitymediumThe ext_proc response issue, CVE-2026-47207

    The ext_proc response handling issue involving one gRPC message was corrected in Envoy. The change addresses CVE-2026-47207 and GHSA-68cv-hq5f-g6xv.

  • securitymediumRouter internal redirects crash, CVE-2026-47221

    The router internal redirects crash was corrected in Envoy. The change addresses CVE-2026-47221 and GHSA-rcff-gw58-pjpr.

  • securitymediumOAuth2 code verifier padding oracle, CVE-2026-47775

    The OAuth2 code verifier padding oracle issue was corrected in Envoy. The change addresses CVE-2026-47775 and GHSA-396h-jpq4-vc7p.

  • securitymediumThe grpc_stats filter segfault, CVE-2026-47204

    The grpc_stats filter segfault on Connect protocol requests to direct_response routes was corrected in Envoy. The change addresses CVE-2026-47204 and GHSA-3jxh-8p6x-7pf6.

  • securitymediumPROXY Protocol v2 skipped TLVs, CVE-2026-47692

    The PROXY Protocol v2 header generator issue involving skipped TLVs and attacker-controlled spillover into the upstream application stream was corrected in Envoy. The change addresses CVE-2026-47692 and GHSA-wh36-hm39-mm3r.

  • securitymediumEmbedded NUL in TLS SAN truncation, CVE-2026-47778

    The embedded NUL issue in TLS SAN truncation that could cause an authorization bypass was corrected in Envoy. The change addresses CVE-2026-47778 and GHSA-f8x4-rw5x-f3r7.

  • securitymediumOAuth2 filter late token completion, CVE-2026-48090

    The OAuth2 filter issue involving late asynchronous token completion after stream teardown was corrected in Envoy. The change addresses CVE-2026-48090 and GHSA-3cj2-c63f-q26f.

  • securitymediumDNS UDP filter abnormal process termination, CVE-2026-48497

    The abnormal process termination in the DNS UDP filter was corrected in Envoy. The change addresses CVE-2026-48497 and GHSA-j6g2-wf95-q66q.

  • securitymediumThe TcpStatsdSink heap buffer overflow, CVE-2026-48706

    The heap buffer overflow in TcpStatsdSink was corrected in Envoy. The change addresses CVE-2026-48706 and GHSA-7q3f-gwg7-j8g4.

  • securityHTTP/3 QPACK blocked decoding, GHSA-p7c7-7c47-pwch

    The HTTP/3 stack issue involving QPACK blocked decoding was corrected in Envoy. The change addresses GHSA-p7c7-7c47-pwch.

Check if affected (2)

  • breakingThe envoy.network.connection_balance.dlb extension removal

    Applies if you use envoy.network.connection_balance.dlb.

  • breakingThe envoy.reloadable_features.tls_certificate_compression_brotli default

    Applies if you do not configure envoy.reloadable_features.tls_certificate_compression_brotli.

Source ↗
Envoyv1.37.5Networking & MessagingJun 23, 2026
ACTION 1CHECK 16View full analysis

A security-focused release with fixes for multiple Envoy components, extensions, protocols, and dependencies. It also disables the broken envoy.network.connection_balance.dlb contrib extension at the Bazel layer for all builds and platforms.

Action needed (1)

  • securityhighcom_github_wasmtime dependency update, CVE-2026-47261

    The com_github_wasmtime dependency was bumped to resolve CVE-2026-47261.

Check if affected (16)

Source ↗
Envoyv1.36.9Networking & MessagingJun 23, 2026
ACTION 1CHECK 15View full analysis

A security-focused release with fixes for crashes, request handling, protocol processing, authentication, and parsing, plus a security-related wasm dependency update. The contrib extension envoy.network.connection_balance.dlb is disabled in all builds.

Action needed (1)

  • securityhighHighly nested JSON destructor stack overflow

    The stack overflow in the destructor of highly nested JSON is corrected in connection with CVE-2026-48042 and GHSA-f24p-rxw2-g6pv.

Check if affected (15)

  • securityhighzstd RLE zip bomb correction

    Applies if you use zstd.

  • securityhighHTTP/3 to HTTP/1 request smuggling

    Applies if you use HTTP/3 and HTTP/1.

  • securityhighcom_github_wasmtime dependency update

    Applies if you use wasm.

  • + 12 more on the release page
Source ↗
Envoyv1.35.13Networking & MessagingJun 23, 2026
ACTION 1CHECK 14View full analysis

A security-focused maintenance release with fixes across filters, protocol handling, request processing, and JSON parsing. It also updates the Wasmtime dependency and disables the contrib extension envoy.network.connection_balance.dlb.

Action needed (1)

  • securityhighHighly nested JSON destructor stack overflow, corrected for CVE-2026-48042

    This release corrects the stack overflow in the destructor of highly nested JSON described by CVE-2026-48042 and GHSA-f24p-rxw2-g6pv.

Check if affected (14)

Source ↗
Strimzi1.0.1Networking & MessagingJun 17, 2026
ACTION 2CHECK 2View full analysis

A release focused on CRD compatibility and Entity Operator watching defaults, with fixes for disclosed security vulnerabilities. It affects deployments using older CRD APIs or configuring cross-namespace watching.

Action needed (2)

Check if affected (2)

  • breakingSupported CRD API versions narrowed

    Applies if you use the v1beta2, v1beta1, or v1alpha1 CRD APIs.

  • breakingEntity Operator cross-namespace watching default

    Applies if you configure STRIMZI_ENTITY_OPERATOR_WATCHED_NAMESPACE_ENABLED or watchedNamespace.

Source ↗
Ciliumv1.19.5Networking & MessagingJun 16, 2026
CHECK 3OTHER 48View full analysis

A maintenance-focused release with correctness fixes, dependency updates, operator troubleshooting improvements, and a security fix for a namespace-bypass issue. It also removes obsolete Helm settings, so configurations using those values need review.

Check if affected (3)

  • securityWildcard namespace bypass for selectorless ipBlock rules, fixed

    Applies if you configure ipBlock.

  • breakingThe loadBalancer.standalone Helm option, removed

    Applies if you configure loadBalancer.standalone.

  • breakingThe l2podAnnouncements.interface Helm value, replaced by l2podAnnouncements.interfacePattern

    Applies if you configure l2podAnnouncements.interface and enable L2 pod announcements.

Source ↗
Istio1.29.4Networking & MessagingJun 4, 2026
ACTION 1OTHER 6View full analysis

A maintenance release with a security fix for Envoy and operator-relevant correctness fixes across Istio ambient, gateway, routing, and CNI behavior. It also adds automatic fallback from the nftables backend to iptables when the bundled nft binary lacks JSON support.

Action needed (1)

  • securityhighCVE-2026-47774 Envoy memory exhaustion fix

    CVE-2026-47774 fixes an Envoy memory exhaustion issue in which specially crafted HTTP/2 requests could bypass request header size accounting and trigger excessive memory use. The fix ships in Envoy.

Source ↗
Istio1.28.8Networking & MessagingJun 4, 2026
ACTION 1OTHER 3View full analysis

A maintenance release with a disclosed Envoy denial-of-service fix and additional correctness fixes. The security fix addresses memory exhaustion from specially crafted HTTP/2 requests, while the other corrections do not require setup changes.

Action needed (1)

  • securityhighThe Envoy denial-of-service vulnerability CVE-2026-47774, fixed

    CVE-2026-47774 fixes an Envoy denial-of-service vulnerability in which specially crafted HTTP/2 requests could cause excessive memory consumption. The fix accounts for cookie header bytes during request header size validation and limits total decoded header size in HPACK processing.

Source ↗
Istio1.30.1Networking & MessagingJun 4, 2026
ACTION 1CHECK 1OTHER 15View full analysis

A maintenance release with an Envoy denial-of-service security fix, defect corrections, new operator-facing capabilities, a dependency update, and removal of a feature-gate guard. The security fix addresses disclosed advisory CVE-2026-47774.

Action needed (1)

  • securityhighCVE-2026-47774 Envoy denial-of-service fix

    The fix addresses CVE-2026-47774 in Envoy, where specially crafted HTTP/2 requests could exhaust process memory because decoded header size was not fully limited during request validation.

Check if affected (1)

  • breakingPILOT_ENABLE_ALPHA_GATEWAY_API guard removed from ListenerSet

    Applies if you use the ListenerSet API.

Source ↗
Envoyv1.38.1Networking & MessagingJun 4, 2026
ACTION 1CHECK 4OTHER 2View full analysis

A maintenance release with HTTP/2 protections, an nghttp2 patch, and an OAuth2 HMAC verification fix. It also changes router response-body output and EDS batch load-balancer rebuild defaults, while the release notes include crash fixes in OAuth2 token-cookie decryption and dynamic HTTP filters.

Action needed (1)

  • securityhighnghttp2 patch for CVE-2026-27135

    The nghttp2 dependency includes the patch for CVE-2026-27135. The patched dependency ships in v1.38.1.

Check if affected (4)

  • securityhighHTTP/2 header-limit enforcement and cookie accounting

    Applies if you use HTTP/2 and do not enable envoy.reloadable_features.http2_include_cookies_in_limits.

  • securityOAuth2 HMAC verification timing side-channel fix

    Applies if you use oauth2.

  • breakingRouter transport-failure reason response body

    Applies if you use the router and do not enable envoy.reloadable_features.hide_transport_failure_reason_in_response_body.

  • + 1 more on the release page
Source ↗
Envoyv1.37.3Networking & MessagingJun 4, 2026
ACTION 1CHECK 2OTHER 2View full analysis

A maintenance release focused on security and correctness fixes. The remaining heading-only items have no operator-facing changes.

Action needed (1)

  • securityhighnghttp2 CVE-2026-27135 patch

    The nghttp2 CVE-2026-27135 patch is applied in the release.

Check if affected (2)

  • securityhighHTTP/2 header list limits and cookie accounting

    Applies if you use HTTP/2.

  • securityOAuth2 HMAC verification timing

    Applies if you use oauth2.

Source ↗
Envoyv1.36.7Networking & MessagingJun 4, 2026
ACTION 1CHECK 2OTHER 2View full analysis

Envoy v1.36.7 is a security-focused update with changes to HTTP/2 handling and OAuth2 authentication. It also includes an nghttp2 security patch, so deployments using these components are directly affected.

Action needed (1)

  • securityhighThe nghttp2 CVE-2026-27135 patch

    Envoy v1.36.7 applies the nghttp2 patch for CVE-2026-27135 in its HTTP/2 handling.

Check if affected (2)

  • securityhighHTTP/2 header-limit enforcement and cookie accounting

    Applies if you use HTTP/2 with configured header list or request-header limits.

  • securityOAuth2 HMAC verification timing side-channel fix

    Applies if you use the OAuth2 filter.

Source ↗
Envoyv1.35.11Networking & MessagingJun 3, 2026
ACTION 1CHECK 2OTHER 4View full analysis

Envoy v1.35.11 is a security-focused release with fixes in HTTP/2, OAuth2, and nghttp2. It also includes ordinary bug fixes and new statistics capabilities, while the security changes are the ones that require upgrading.

Action needed (1)

  • securityhighThe nghttp2 CVE-2026-27135 patch

    Envoy v1.35.11 applies the nghttp2 patch for CVE-2026-27135.

Check if affected (2)

  • securityhighHTTP/2 header limits and cookie accounting

    Applies if you use HTTP/2 request header limits.

  • securityOAuth2 HMAC verification timing protection

    Applies if you use OAuth2 HMAC verification.

Source ↗
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