CVE-2026-23881

MEDIUM EPSS 40.8%
Published Jan 27, 20265mo ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Jan 27, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
40.8% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-770

Affected Products 2

VendorProductVersionRange
kyvernokyverno* <1.15.3
kyvernokyverno*≥1.16.0  –  <1.16.3

References 3

  • github.com https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f
    Patch
  • github.com https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7
    Patch
  • github.com https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq
    ExploitMitigationVendor Advisory

Remediation

  • github.com https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f
    Patch
  • github.com https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7
    Patch