CVE-2026-40109
unknown
CVSS v3
—
CVSS v4 NEW
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VIR risk
—
Description
Flux notification-controller GCR Receiver missing email validation allows unauthorized reconciliation triggering
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/fluxcd/notification-controller | <1.8.3 | 1.8.3 |
References
- 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
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.