Riskcovery

CVE-2026-23881

Kyverno Denial of Service via Context Variable Amplification in Policy Engine

State
Published
Severity
7.7 High
Published
Jan 27, 2026
Updated
Jan 27, 2026
Reserved
Jan 16, 2026

Read the record on cve.org

Description

Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.

Scores

CVSSScoreVectorSource
3.17.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:HGitHub_M

Weaknesses

  • CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

ProductVersions
kyvernokyverno
  • < 1.15.3Affected
  • >= 1.16.0, < 1.16.3Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.