CVE-2026-4789

Name: CVE-2026-4789
Creator: NVD / NIST
Published: 2026-03-30T21:17:10.843+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2026-4789 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.70%

48.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Kyverno	Kyverno	>= 1.16.0, <= 1.17.1

References

https://github.com/kyverno/kyvernoProduct
https://kb.cert.org/vuls/id/655822Third Party Advisory
https://portswigger.net/web-security/ssrfTechnical Description
https://www.kb.cert.org/vuls/id/655822Third Party Advisory

Timeline

Published: Mar 30, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-4789?

Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.

How severe is CVE-2026-4789?

CVE-2026-4789 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2026-4789?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-4789?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST