CVE-2026-84195CWE-200information-disclosure

CVE-2026-84195

High · published September 1, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
31.4
In the wild
Unconfirmed
What it is

Kyverno before 1.16.4 automatically attaches the admission controller's ServiceAccount token to outbound HTTP requests in apiCall service mode without explicit authorization headers. Attackers can exfiltrate the token by directing apiCall requests to external or attacker-controlled endpoints, gaining full control over Kyverno policies and cluster resources.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
8.3 · 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
EPSS
0.00386 · 31.4th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2026-09-01T16:17Z
References (3)
https://github.com/kyverno/kyverno/security/advisories/GHSA-8wfp-579w-6r25 · [email protected]https://www.vulncheck.com/advisories/kyverno-before-1.16.4-credential-leak-via-apicall · [email protected]https://github.com/kyverno/kyverno/security/advisories/GHSA-8wfp-579w-6r25 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 03 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 01 SEP 11:33Z
    Kyverno before 1.16.4 Credential Leak via apiCall
    cvelistv5