Dashboard / CVE-2026-122311

CVE-2026-122311

CRITICAL
INFO Priority: 0.04 BB Relevance: 69/100
Published: 2026-11-05 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

Description

Kyverno from 1.16.0 before 1.19.2 fails to validate path segments in the resource argument of resource.get() and resource.post(), allowing namespaced CEL policies to escape their namespace. Tenants who can create a NamespacedValidatingPolicy can insert .. segments to read and write arbitrary cluster objects using the admission controller's ServiceAccount, leading to cluster takeover.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
kyverno kyverno 1.16.0 < 1.19.2

References & Advisories (2)

Bug Bounty Relevance

69 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.4 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.45%
Raw Score 0.004480
Percentile 39.1%
Date 2026-11-05

Intelligence Sources

mitre ref →
nvd ref →

External Links