What is the CVSS score of CVE-2026-23881?

CVE-2026-23881 has a CVSS 3.1 base score of 7.7 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H. EPSS exploitation probability: 0.1%.

Which versions of Kyverno are affected by CVE-2026-23881?

Kyverno policy engine versions up to 1.16.3 contain a resource exhaustion vulnerability that could allow attackers to disable cluster policy enforcement through denial-of-service, potentially…. A patch is available.

Is there a public PoC exploit available for CVE-2026-23881?

Yes, a public proof-of-concept exploit is available for CVE-2026-23881. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2026-23881?

Within 24 hours: Identify all Kyverno deployments and document current versions in use. Within 7 days: Test and deploy Kyverno 1.16.4 or later in non-production environments to validate compatibility. Within 30 days: Complete production upgrades across all clusters and verify policy enforcement functionality post-patch.

Kyverno CVE-2026-23881

HIGH

Allocation of Resources Without Limits or Throttling (CWE-770)

2026-01-27 security-advisories@github.com

GHSA-r2rj-wwm5-x6mq

Denial Of Service Kyverno Suse

7.7

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.7 HIGH

AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

SUSE

HIGH

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Feb 02, 2026 - 15:20 vuln.today

Public exploit code

Patch released

Feb 02, 2026 - 15:20 nvd

Patch available

CVE Published

Jan 27, 2026 - 17:16 nvd

HIGH 7.7

DescriptionGitHub Advisory

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.

AnalysisAI

Kyverno versions up to 1.16.3 is affected by allocation of resources without limits or throttling (CVSS 7.7).

Technical ContextAI

This vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affects Kyverno. 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.

RemediationAI

A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.

More in Kyverno

View all

CVE-2026-22039 CRITICAL Act Now POC

9.9 Jan 27

Kyverno Kubernetes policy engine prior to 1.x has a privilege escalation vulnerability (CVSS 9.9) allowing policy bypass

CVE-2024-48921 HIGH This Week POC

8.7 Oct 29

Kyverno is a policy engine designed for Kubernetes. Rated high severity (CVSS 8.7), this vulnerability is remotely explo

CVE-2025-46342 HIGH This Week POC

8.5 Apr 30

Kyverno is a policy engine designed for cloud native platform engineering teams. Rated high severity (CVSS 8.5), this vu

CVE-2025-29778 MEDIUM This Month POC

5.8 Mar 24

Kyverno is a policy engine designed for cloud native platform engineering teams. Rated medium severity (CVSS 5.8), this

CVE-2023-33191 HIGH This Week

8.8 May 30

Kyverno is a policy engine designed for Kubernetes. Rated high severity (CVSS 8.8), this vulnerability is remotely explo

CVE-2022-47633 HIGH This Week

8.1 Dec 23

An image signature validation bypass vulnerability in Kyverno 1.8.3 and 1.8.4 allows a malicious image registry (or a ma

CVE-2023-47630 HIGH This Week

7.1 Nov 14

Kyverno is a policy engine designed for Kubernetes. Rated high severity (CVSS 7.1), this vulnerability is remotely explo

CVE-2023-34091 MEDIUM This Month

6.5 Jun 01

Kyverno is a policy engine designed for Kubernetes. Rated medium severity (CVSS 6.5), this vulnerability is remotely exp

CVE-2023-42816 MEDIUM This Month

5.3 Nov 13

Kyverno is a policy engine designed for Kubernetes. Rated medium severity (CVSS 5.3), this vulnerability is remotely exp

CVE-2023-42815 MEDIUM This Month

5.3 Nov 13

Kyverno is a policy engine designed for Kubernetes. Rated medium severity (CVSS 5.3), this vulnerability is remotely exp

CVE-2023-42814 MEDIUM This Month

5.3 Nov 13

Kyverno is a policy engine designed for Kubernetes. Rated medium severity (CVSS 5.3), this vulnerability is remotely exp

CVE-2023-42813 MEDIUM This Month

5.3 Nov 13

Kyverno is a policy engine designed for Kubernetes. Rated medium severity (CVSS 5.3), this vulnerability is remotely exp

Same weakness CWE-770 – Allocation of Resources Without Limits or Throttling

View all

CVE-2017-8779 HIGH POC

7.5

CVE-2025-53521 CRITICAL POC

9.3

CVE-2017-5850 HIGH POC

7.5

CVE-2025-26682 HIGH

7.5

CVE-2025-26466 MEDIUM

5.9

CVE-2020-37067 CRITICAL POC

9.8

CVE-2021-47875 CRITICAL POC

9.8

CVE-2023-38507 CRITICAL POC

9.8

Same technique Denial Of Service

View all

CVE-2015-5119 CRITICAL POC

9.8

CVE-2011-2462 CRITICAL POC

9.8

CVE-2011-0611 HIGH POC

8.8

CVE-2012-1889 HIGH POC

8.8

CVE-2012-0507 CRITICAL POC

9.8

CVE-2014-1761 HIGH POC

7.8

CVE-2015-5122 CRITICAL POC

9.8

CVE-2011-0609 HIGH POC

7.8

Vendor StatusVendor

SUSE

Severity: High

Product	Status
openSUSE Leap 15.6	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP6	Fixed
openSUSE Leap 15.5	Fixed

CVE-2026-23881 vulnerability details – vuln.today

Back

Kyverno CVE-2026-23881

Severity by source

CVSS VectorGitHub Advisory

Lifecycle Timeline

DescriptionGitHub Advisory

AnalysisAI

Technical ContextAI

RemediationAI

More in Kyverno

Same weakness CWE-770 – Allocation of Resources Without Limits or Throttling

Same technique Denial Of Service

Vendor StatusVendor

SUSE

Share

External POC / Exploit Code