Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Ingress-nginx versions below 1.13.7 and versions from 1.14.0 before 1.14.3 may not enforce the `auth-url` annotation when authentication fails. This requires the controller to be configured with a default custom-errors setting that includes HTTP 401 or 403 and a defective custom-errors backend that ignores the X-Code header, in which case an Ingress protected by `auth-url` could be reached without valid authentication. Upgrade to version 1.13.7 or 1.14.3. The built-in custom-errors backend is not affected.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 3.1 | Low | 3.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N | CNA (kubernetes) |
- CISA KEV Not listed.
- EPSS 0.0035, the 28th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:14 UTC First seen by agentprime
- 31 Oct 2026, 14:14 UTC Confirmed by OSV