Dashboard / CVE-2026-122309

CVE-2026-122309

HIGH
MEDIUM Priority: 0.02 BB Relevance: 51/100
Published: 2026-11-05 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity

CVSS Vector Breakdown

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

Description

Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust CPU and memory by submitting CEL expressions evaluated without runtime cost limits. Attackers can create a NamespacedValidatingPolicy or NamespacedDeletingPolicy with nested map comprehensions over large ConfigMap fields to OOM-kill Kyverno pods and block cluster-wide admission.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
kyverno kyverno 0 < 1.19.2

References & Advisories (2)

Bug Bounty Relevance

51 / 100
✓ Network accessible
✓ Low complexity

CVSS Score

8.2 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/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

0.20%
Raw Score 0.001970
Percentile 9.5%
Date 2026-11-05

Intelligence Sources

mitre ref →
nvd ref →

External Links