CVE-2026-23881

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 v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f	Patch
https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7	Patch
https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:kyverno:kyverno::::::::
	cpe:2.3:a:kyverno:kyverno::::::::

History

02 Feb 2026, 15:20

Type	Values Removed	Values Added
CPE		cpe:2.3:a:kyverno:kyverno::::::::
First Time		Kyverno Kyverno kyverno
References	~~() https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f -~~	() https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f - Patch
References	~~() https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7 -~~	() https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7 - Patch
References	~~() https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq -~~	() https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq - Exploit, Mitigation, Vendor Advisory

27 Jan 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-01-27 17:16

Updated : 2026-02-02 15:20

NVD link : CVE-2026-23881

Mitre link : CVE-2026-23881

CVE.ORG link : CVE-2026-23881

JSON object : View

Products Affected

kyverno

kyverno

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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