CVE-2026-4789

Aliases:GHSA-qqrv-2hch-83q4BIT-kyverno-2026-4789GHSA-rggm-jjmc-3394
Advisory lineage Upstream: 0 Downstream: 1
Analyzed
Published: 30 Mar 2026, 20:44
Last modified:01 Apr 2026, 18:43

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Mar 2026, 20:44
Published
Vulnerability first disclosed
01 Apr 2026, 18:43
Last Modified
Vulnerability information updated

Description

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

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v3.1•HIGH•Score: 8.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

EPSS Trends

Current EPSS score: 0.02%• Percentile: 6%

Techniques & Countermeasures

  • CWE-918•Server-Side Request Forgery (SSRF)

    The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Affected Systems

  • github.com/kyverno•kyverno

    ≥ 1.16.0, ≤ 1.17.1 | ≥ 1.16.0, < 1.17.0

  • kyverno•kyverno

    1.16.0 | ≥ 1.16.0, ≤ 1.17.1

References (7)