Flux notification-controller GCR Receiver missing email validation allows unauthorized reconciliation triggering

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-40109 · Microsoft / collected KEV context

EUVD-2026-21150

GHSA-h9cx-xjg6-5v2w

GO-2026-5419

cve-program · CVE-2026-40109

• https://github.com/fluxcd/notification-controller/security/advisories/GHSA-h9cx-xjg6-5v2w
• https://github.com/fluxcd/notification-controller/pull/1279
• https://github.com/fluxcd/notification-controller/releases/tag/v1.8.3

euvd · EUVD-2026-21150

• https://github.com/fluxcd/notification-controller/security/advisories/GHSA-h9cx-xjg6-5v2w
• https://github.com/fluxcd/notification-controller/pull/1279
• https://github.com/fluxcd/notification-controller/releases/tag/v1.8.3

nvd · CVE-2026-40109

• https://github.com/fluxcd/notification-controller/pull/1279
• https://github.com/fluxcd/notification-controller/releases/tag/v1.8.3
• https://github.com/fluxcd/notification-controller/security/advisories/GHSA-h9cx-xjg6-5v2w

osv · GHSA-h9cx-xjg6-5v2w

• https://github.com/fluxcd/notification-controller/security/advisories/GHSA-h9cx-xjg6-5v2w
• https://nvd.nist.gov/vuln/detail/CVE-2026-40109
• https://github.com/fluxcd/notification-controller/pull/1279
• https://github.com/fluxcd/notification-controller
• https://github.com/fluxcd/notification-controller/releases/tag/v1.8.3

osv · GO-2026-5419

• https://github.com/fluxcd/notification-controller/security/advisories/GHSA-h9cx-xjg6-5v2w
• https://nvd.nist.gov/vuln/detail/CVE-2026-40109
• https://github.com/fluxcd/notification-controller/pull/1279
• https://github.com/fluxcd/notification-controller/releases/tag/v1.8.3

No related operational record is retained in the current change model.