Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Kyverno versions before 1.17.0 automatically attach the admission controller's ServiceAccount token to outbound HTTP requests made by apiCall service-mode policies when no Authorization header is defined. An attacker who can get a policy to call an external or attacker-controlled endpoint can receive that token and use it to act with the controller's cluster permissions. Upgrade the github.com/kyverno/kyverno package to version 1.17.0 or later.
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 |
|---|---|---|---|---|
| 8.3 | High | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0039, the 33rd percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:13 UTC First seen by agentprime
- 31 Oct 2026, 14:13 UTC Confirmed by OSV