{"id":"CVE-2026-26287","revision":null,"records":[{"revision":"c298897dd8dc4afbb3998ddc9e85d87c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-26287","aliases":[],"title":"External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration","description":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the `webhook` generator initialization order incorrectly cleared the label-enforcement flag (`EnforceLabels`) after it was set, resulting in the provider-side check for `external-secrets.io/type=webhook` being skipped (and the operation to succeed while it should have failed with `secret does not contain needed label 'external-secrets.io/type: webhook'. Update secret label to use it with webhook`. Version 1.3.2 contains a patch.","state":0,"publishedAt":"2026-10-06T15:31:56.088+00:00","modifiedAt":"2026-10-06T17:21:44.292+00:00","affected":[{"ecosystem":"Vendor product","name":"external-secrets","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"external-secrets\",\n                    \"product\": \"external-secrets\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 0.10.0, < 1.3.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8","https://github.com/external-secrets/external-secrets/pull/5901","https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba","https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-26287","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-26287","identifiers":["CVE-2026-26287"]},"retained":false,"historicalAffected":[]},{"revision":"7f34b82b2a6a44cc9ce79d6c76350d41","observedAt":"2026-11-07T06:28:11.576+00:00","statement":{"source":"euvd","id":"EUVD-2026-93468","aliases":["CVE-2026-26287","GHSA-q7hv-xx6h-q2x8"],"title":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the `webhook` generator initialization order …","description":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the `webhook` generator initialization order incorrectly cleared the label-enforcement flag (`EnforceLabels`) after it was set, resulting in the provider-side check for `external-secrets.io/type=webhook` being skipped (and the operation to succeed while it should have failed with `secret does not contain needed label 'external-secrets.io/type: webhook'. Update secret label to use it with webhook`. Version 1.3.2 contains a patch.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1,"severity":null}],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8","https://github.com/external-secrets/external-secrets/pull/5901","https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba","https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93468","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Oct 6, 2026, 3:31:56 PM","dateUpdated":"Oct 6, 2026, 5:21:44 PM"},"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-2026-93468","identifiers":["EUVD-2026-93468","CVE-2026-26287","GHSA-q7hv-xx6h-q2x8"]},"retained":false,"historicalAffected":[]},{"revision":"76b8f333ebf64a18a2e752ba08675500","observedAt":"2026-10-25T06:17:22.45+00:00","statement":{"source":"nvd","id":"CVE-2026-26287","aliases":[],"title":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the `webhook` generator initialization order …","description":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Starting in version 0.10.0 and prior to version 1.3.2, a bug in the `webhook` generator initialization order incorrectly cleared the label-enforcement flag (`EnforceLabels`) after it was set, resulting in the provider-side check for `external-secrets.io/type=webhook` being skipped (and the operation to succeed while it should have failed with `secret does not contain needed label 'external-secrets.io/type: webhook'. Update secret label to use it with webhook`. Version 1.3.2 contains a patch.","state":0,"publishedAt":"2026-10-06T16:17:07.18+00:00","modifiedAt":"2026-10-06T20:03:40.69+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba","https://github.com/external-secrets/external-secrets/pull/5901","https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2","https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-26287","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Awaiting Analysis","weaknesses":["CWE-696"],"productCriteria":[],"sourceDates":{"published":"2026-10-06T16:17:07.180","lastModified":"2026-10-06T20:03:40.690"},"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-2026-26287","identifiers":["CVE-2026-26287"]},"retained":false,"historicalAffected":[]},{"revision":"a74c92ff9c4a456c8388f3cbff971293","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-q7hv-xx6h-q2x8","aliases":["CVE-2026-26287","GO-2026-6667"],"title":"External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration","description":"## Summary\nA bug in the `webhook` generator initialization order incorrectly cleared the label-enforcement flag (`EnforceLabels`) after it was set, resulting in the provider-side check for `external-secrets.io/type=webhook` being skipped (and the operation to succeed while it should have failed with `secret does not contain needed label 'external-secrets.io/type: webhook'. Update secret label to use it with webhook`.\n\n## Impact\nA user with the permission to create webhook generator can set the webhook generator to a victim' secret (which was not previously labelled for webhook's use), and exfiltrate it to a malicious URL.\n\n## Mitigations\nUntil you upgrade, you can reduce risk by:\n- disabling webhook generators if not needed (or denying `generators.external-secrets.io/v1alpha1` `Webhook` via an admission policy);\n- restricting RBAC: limit who can create generators of kind `Webhook`;\n- enforcing an admission policy (OPA Gatekeeper / Kyverno) requiring referenced secrets to be labeled `external-secrets.io/type=webhook`;\n- restricting egress from external-secrets controller pods to an allowlist (kubernetes `NetworkPolicy` / service mesh egress policy).\n\n## References\n- PR #5901 (fix: webhook initialization order)","state":0,"publishedAt":"2026-10-06T15:29:25+00:00","modifiedAt":"2026-10-20T00:55:45.0816167+00:00","affected":[{"ecosystem":"Go","name":"github.com/external-secrets/external-secrets","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.10.0"},{"kind":"fixed","version":"1.3.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8","https://github.com/external-secrets/external-secrets/pull/5901","https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba","https://github.com/external-secrets/external-secrets","https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2"],"sourceUrl":"https://github.com/advisories/GHSA-q7hv-xx6h-q2x8","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-q7hv-xx6h-q2x8","identifiers":["GHSA-q7hv-xx6h-q2x8","CVE-2026-26287","GO-2026-6667"]},"retained":false,"historicalAffected":[]},{"revision":"9e7a245affb3454eb0f809e77d77cc3b","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-6667","aliases":["CVE-2026-26287","GHSA-q7hv-xx6h-q2x8"],"title":"External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration in github.com/external-secrets/external-secrets","description":"External Secrets Operator: label enforcement bypass in webhook generator enables secret exfiltration in github.com/external-secrets/external-secrets","state":0,"publishedAt":"2026-10-20T00:20:51+00:00","modifiedAt":"2026-10-20T00:45:10.0975007+00:00","affected":[{"ecosystem":"Go","name":"github.com/external-secrets/external-secrets","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.10.0"},{"kind":"fixed","version":"1.3.2"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-q7hv-xx6h-q2x8","https://github.com/external-secrets/external-secrets/commit/25aa09275861e3ed6fc5d2a1a60b9ac3df4a93ba","https://github.com/external-secrets/external-secrets/pull/5901","https://github.com/external-secrets/external-secrets/releases/tag/v1.3.2"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-6667","license":"OSV · upstream source license applies","key":"osv:GO-2026-6667","identifiers":["GO-2026-6667","CVE-2026-26287","GHSA-q7hv-xx6h-q2x8"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-08T14:04:21.6524616+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-08T14:04:21.6524616+00:00","lastSuccessAt":"2026-11-08T14:04:21.8442875+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.8442884+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-eaa64dac63caa79c8d4905619258c41c51b39e461b996124e1a21b5e85e7e738-4b0775bb0fc73c3ceeed66f8f17640894d61d654f97ee9386046b283ad9f9876","complete":true,"records":421100,"lastAttemptAt":"2026-11-08T14:04:21.1432513+00:00","lastSuccessAt":"2026-11-08T14:04:21.1228768+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.1432513+00:00","snapshotPublishedAt":"2026-11-08T13:27:32+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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-383c643166b94ac4b6a615647191978e","complete":true,"records":13654,"lastAttemptAt":"2026-11-08T14:04:47.6384375+00:00","lastSuccessAt":"2026-11-08T13:04:50.073+00:00","error":null,"lastVerifiedAt":"2026-11-08T13:04:50.073+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13706,"expectedIdentifiers":13706,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-08T14:04:21.6524616+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-08T14:04:21.6524616+00:00","lastSuccessAt":"2026-11-08T14:04:21.8452187+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.8452194+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-ceefbd28b79c4b75ac56c9c678246411","complete":false,"records":13666,"lastAttemptAt":"2026-11-08T14:04:46.9956646+00:00","lastSuccessAt":"2026-11-08T14:04:46.992+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:46.992+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13185,"expectedIdentifiers":13706,"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-980593e6977a6d1b4fb1eed5a1ffe88a468736f89f0a06f710924ad59132c023","complete":true,"records":9914,"lastAttemptAt":"2026-11-08T14:04:21.5047325+00:00","lastSuccessAt":"2026-11-08T11:07:07.068788+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.5047325+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+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-fde804134ecdda0ddd5ff5c26ee1fff5a6fa659311f7ef2e51c6ad54964db0e2","complete":true,"records":1971,"lastAttemptAt":"2026-11-08T14:04:21.2941446+00:00","lastSuccessAt":"2026-11-06T19:03:17.0399903+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.2941446+00:00","snapshotPublishedAt":"2026-11-06T18:17:57+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-964c14035e6f0f6478b2870fad6a7ef9f6045876d4a12af2c2e514521e54b6af","complete":true,"records":3055,"lastAttemptAt":"2026-11-08T14:04:21.6167179+00:00","lastSuccessAt":"2026-11-08T11:07:12.1927025+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.6167179+00:00","snapshotPublishedAt":"2026-11-08T11:02:46+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-f8647d7ba64b1ba0dfdc7130944766d5b36d5b77d18fff0c79e651a4cff3c2b9","complete":true,"records":231293,"lastAttemptAt":"2026-11-08T14:04:21.3943214+00:00","lastSuccessAt":"2026-11-08T11:06:56.2918717+00:00","error":null,"lastVerifiedAt":"2026-11-08T14:04:21.3943214+00:00","snapshotPublishedAt":"2026-11-08T11:02:50+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}