{"id":"GHSA-wv26-88m5-6h59","revision":null,"records":[{"revision":"e0f1684f32f641b0a7b1a5fce522f53c","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42875","aliases":[],"title":"External Secrets Operator: Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore","description":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.0, Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA material from another namespace when caProvider.namespace was set. This bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver. 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Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-29190","identifiers":["EUVD-2026-29190","CVE-2026-42875","GHSA-wv26-88m5-6h59"]},"retained":false,"historicalAffected":[]},{"revision":"9f7dbd9a57b0405f8015ad8f571a0c6e","observedAt":"2026-10-25T10:17:15.856+00:00","statement":{"source":"nvd","id":"CVE-2026-42875","aliases":[],"title":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.0, Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA ma…","description":"External Secrets Operator reads information from a third-party service and automatically injects the values as Kubernetes Secrets. Prior to 2.4.0, Namespaced SecretStore resources that used CAProvider with type ConfigMap could resolve CA material from another namespace when caProvider.namespace was set. This bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver. This vulnerability is fixed in 2.4.0.","state":0,"publishedAt":"2026-05-11T20:25:44.143+00:00","modifiedAt":"2026-06-17T10:48:32.843+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-wv26-88m5-6h59"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42875","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-285","CWE-668"],"productCriteria":[],"sourceDates":{"published":"2026-05-11T20:25:44.143","lastModified":"2026-06-17T10:48:32.843"},"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-2026-42875","identifiers":["CVE-2026-42875"]},"retained":false,"historicalAffected":[]},{"revision":"7e72f33372bb4a7d9e812e53a2454e65","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GHSA-wv26-88m5-6h59","aliases":["CVE-2026-42875","GO-2026-5723"],"title":"External Secrets Operator has Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore","description":"### Impact\n\nNamespaced SecretStore resources that used CAProvider with type `ConfigMap` could resolve CA material from another namespace when `caProvider.namespace` was set. \nThis bypassed the namespace boundary enforced for SecretStore-backed references in providers that rely on the shared runtime CA resolver. \n\nThe accessible data is used as CA validation material, hence it is not directly exposed.\n\nImpact:\n- Direct data exfiltration risk: low\n- Existence disclosure: an attacker can infer whether a target ConfigMap/key exists in another namespace.\n- Trust-boundary violation: a tenant can make its SecretStore consume CA material owned by another namespace.","state":0,"publishedAt":"2026-05-05T18:37:12+00:00","modifiedAt":"2026-09-10T03:50:47.9144281+00:00","affected":[{"ecosystem":"Go","name":"github.com/external-secrets/external-secrets","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"2.4.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V4","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-wv26-88m5-6h59","https://nvd.nist.gov/vuln/detail/CVE-2026-42875","https://github.com/external-secrets/external-secrets"],"sourceUrl":"https://github.com/advisories/GHSA-wv26-88m5-6h59","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-wv26-88m5-6h59","identifiers":["GHSA-wv26-88m5-6h59","CVE-2026-42875","GO-2026-5723"]},"retained":false,"historicalAffected":[]},{"revision":"f75896f0d45642de83005bded9dacf2b","observedAt":"2026-10-24T13:19:41.952+00:00","statement":{"source":"osv","id":"GO-2026-5723","aliases":["CVE-2026-42875","GHSA-wv26-88m5-6h59"],"title":"External Secrets Operator has Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore in github.com/external-secrets/external-secrets","description":"External Secrets Operator has Namespace Isolation Bypass in CAProvider ConfigMap Resolution for SecretStore in github.com/external-secrets/external-secrets.\n\nNOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions.\n\n(If this is causing false-positive reports from vulnerability scanners, please suggest an edit to the report.)\n\nThe additional affected modules and versions are: github.com/external-secrets/external-secrets before v2.4.0.","state":0,"publishedAt":"2026-06-25T22:34:38+00:00","modifiedAt":"2026-06-25T23:01:40.0488715+00:00","affected":[{"ecosystem":"Go","name":"github.com/external-secrets/external-secrets","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://github.com/external-secrets/external-secrets/security/advisories/GHSA-wv26-88m5-6h59","https://nvd.nist.gov/vuln/detail/CVE-2026-42875"],"sourceUrl":"https://osv.dev/vulnerability/GO-2026-5723","license":"OSV · upstream source license applies","key":"osv:GO-2026-5723","identifiers":["GO-2026-5723","CVE-2026-42875","GHSA-wv26-88m5-6h59"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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