{"id":"BIT-contour-2026-50149","revision":null,"records":[{"revision":"f4db46cc12bb4119aacb22169c90f119","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-50149","aliases":[],"title":"Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled","description":"Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token. This issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status  condition with the error reason `TLSIncompatibleFeatures`. As a workaround, do not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.virtualhost.jwtProviders`. Remove one of the two settings to avoid the invalid configuration.","state":0,"publishedAt":"2026-08-19T14:16:21.476+00:00","modifiedAt":"2026-08-25T02:03:11.629+00:00","affected":[{"ecosystem":"Vendor product","name":"contour","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"projectcontour\",\n                    \"product\": \"contour\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 1.23.0, < 1.33.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-50149","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-50149","identifiers":["CVE-2026-50149"]},"retained":false,"historicalAffected":[]},{"revision":"b1b70892a67b4228ab69b361ea4c3a38","observedAt":"2026-11-11T13:05:56.883+00:00","statement":{"source":"euvd","id":"EUVD-2026-62414","aliases":["CVE-2026-50149","GHSA-g3xr-5w5j-w4q4"],"title":"Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virt…","description":"Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token. This issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status  condition with the error reason `TLSIncompatibleFeatures`. As a workaround, do not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.virtualhost.jwtProviders`. Remove one of the two settings to avoid the invalid configuration.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":6.5,"severity":null}],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-62414","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 19, 2026, 2:16:21 PM","dateUpdated":"Aug 25, 2026, 2:03:11 AM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-62414","identifiers":["EUVD-2026-62414","CVE-2026-50149","GHSA-g3xr-5w5j-w4q4"]},"retained":false,"historicalAffected":[]},{"revision":"28e459eb7375428892cee941e0521738","observedAt":"2026-10-25T12:17:38.331+00:00","statement":{"source":"nvd","id":"CVE-2026-50149","aliases":[],"title":"Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virt…","description":"Contour is a Kubernetes ingress controller using Envoy proxy. In versions 1.23.0 through 1.33.4, when an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token. This issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status  condition with the error reason `TLSIncompatibleFeatures`. As a workaround, do not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.virtualhost.jwtProviders`. Remove one of the two settings to avoid the invalid configuration.","state":0,"publishedAt":"2026-08-19T15:17:08.71+00:00","modifiedAt":"2026-09-18T20:09:01.757+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":6.5,"severity":"MEDIUM"}],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-50149","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-295"],"productCriteria":[],"sourceDates":{"published":"2026-08-19T15:17:08.710","lastModified":"2026-09-18T20:09:01.757"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-50149","identifiers":["CVE-2026-50149"]},"retained":false,"historicalAffected":[]},{"revision":"933a46a35e8148898acae66bb56d59c0","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-g3xr-5w5j-w4q4","aliases":["BIT-contour-2026-50149","CVE-2026-50149","GO-2026-5889"],"title":"Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled","description":"### Impact\n\nWhen an `HTTPProxy` is configured with incompatible combination of both `.spec.virtualhost.tls.enableFallbackCertificate: true` and `.spec.virtualhost.jwtProviders`, Contour does not reject the configuration. Consequently, requests from clients that do not send TLS SNI or send an unrecognized SNI (one that does not match any `HTTPProxy` FQDN) bypass configured JWT verification and are proxied to upstream services without a valid token.\n\nTo list all `HTTPProxies` with this invalid configuration, run\n\n```bash\nkubectl get httpproxies -A -o json | jq -r '\n  .items[]\n  | select(.spec.virtualhost | .tls.enableFallbackCertificate and .jwtProviders)\n  | \"Invalid HTTPProxy found: \\(.metadata.namespace)/\\(.metadata.name)\"\n'\n```\n\n### Patches\n\nThis issue is fixed in Contour v1.33.5. Contour now rejects and marks invalid any `HTTPProxy` resources that combine `.spec.virtualhost.tls.enableFallbackCertificate: true` with `.spec.virtualhost.jwtProviders`. Affected resources will receive a status  condition with the error reason `TLSIncompatibleFeatures`.\n\n### Workarounds\n\nDo not enable `.spec.virtualhost.tls.enableFallbackCertificate` on `HTTPProxy` resources that also define `.spec.virtualhost.jwtProviders`. Remove one of the two settings to avoid the invalid configuration.\n\n### References\n\n- Contour fallback certificate documentation: https://projectcontour.io/docs/main/config/tls-termination/#fallback-certificate\n- Contour JWT verification documentation: https://projectcontour.io/docs/main/config/jwt-verification/","state":0,"publishedAt":"2026-07-02T17:15:20+00:00","modifiedAt":"2026-09-10T03:50:51.9154595+00:00","affected":[{"ecosystem":"Go","name":"github.com/projectcontour/contour","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.23.0"},{"kind":"fixed","version":"1.33.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4","https://github.com/projectcontour/contour"],"sourceUrl":"https://github.com/advisories/GHSA-g3xr-5w5j-w4q4","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-g3xr-5w5j-w4q4","identifiers":["GHSA-g3xr-5w5j-w4q4","BIT-contour-2026-50149","CVE-2026-50149","GO-2026-5889"]},"retained":false,"historicalAffected":[]},{"revision":"d3d087ae01ce44eda2cd0b60e70402d3","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5889","aliases":["BIT-contour-2026-50149","CVE-2026-50149","GHSA-g3xr-5w5j-w4q4"],"title":"Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled in github.com/projectcontour/contour","description":"Contour has Improper JWT Verification for Non-SNI Requests on Virtual Hosts with Fallback Certificate Enabled in github.com/projectcontour/contour","state":0,"publishedAt":"2026-07-07T15:26:37+00:00","modifiedAt":"2026-08-26T01:11:36.1759487+00:00","affected":[{"ecosystem":"Go","name":"github.com/projectcontour/contour","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"1.23.0"},{"kind":"fixed","version":"1.33.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/projectcontour/contour/security/advisories/GHSA-g3xr-5w5j-w4q4"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5889","license":"OSV · upstream source license applies","key":"osv:GO-2026-5889","identifiers":["GO-2026-5889","BIT-contour-2026-50149","CVE-2026-50149","GHSA-g3xr-5w5j-w4q4"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-7f404f09616a40578b159775b5b66635","complete":false,"records":13793,"lastAttemptAt":"2026-11-13T03:29:27.9813623+00:00","lastSuccessAt":"2026-11-13T03:29:27.977+00:00","error":"370 identifier lookups failed; latest failures include AccessDenied (HTTP 403). Other identifiers were checked independently.","lastVerifiedAt":"2026-11-13T03:29:27.977+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13369,"expectedIdentifiers":13846,"failedIdentifiers":370},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-13T03:19:40.5269590+00:00","complete":true,"records":1123,"lastAttemptAt":"2026-11-13T03:19:40.526959+00:00","lastSuccessAt":"2026-11-13T03:19:40.6892892+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.6892894+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-99b329e58ea7441eaabf9a9af1bb4458","complete":true,"records":13781,"lastAttemptAt":"2026-11-13T03:19:48.7349646+00:00","lastSuccessAt":"2026-11-13T03:19:48.73+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:48.73+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13846,"expectedIdentifiers":13846,"failedIdentifiers":0},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-93e76d404e1aeb6a7e8902f5ffa06211fc86dea3b1958e297abb2668aa5e6e8c","complete":true,"records":9952,"lastAttemptAt":"2026-11-13T03:19:40.4671686+00:00","lastSuccessAt":"2026-11-12T23:19:15.5239119+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.4671686+00:00","snapshotPublishedAt":"2026-11-12T23:03:02+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-4d60731753a2f72e455d1086e7203d0ef10843936dcc1cf2b45135e2caa204b0","complete":true,"records":2012,"lastAttemptAt":"2026-11-13T03:16:36.9337406+00:00","lastSuccessAt":"2026-11-12T18:16:50.7862525+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:16:36.9337406+00:00","snapshotPublishedAt":"2026-11-12T17:48:11+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-20d1a8ab073a1c13ab2143dbcadb34ebb8edf1e18e16482b448513662c3d1e12","complete":true,"records":3127,"lastAttemptAt":"2026-11-13T03:19:40.4889465+00:00","lastSuccessAt":"2026-11-12T22:18:31.0338213+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.4889465+00:00","snapshotPublishedAt":"2026-11-12T22:18:06+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-11714c374501e9f6ac09cc4e36bc0b50c7521131f606050aeabd7887ba2c0080","complete":true,"records":231743,"lastAttemptAt":"2026-11-13T03:19:40.3437235+00:00","lastSuccessAt":"2026-11-13T03:19:38.55958+00:00","error":null,"lastVerifiedAt":"2026-11-13T03:19:40.3437235+00:00","snapshotPublishedAt":"2026-11-13T02:48:17+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}