9.8

CVE-2026-4789: CVE-2026-4789

Analyzed
AliasesCGA-3cg6-h6p9-55mgCGA-3g56-23x5-3mx8CGA-3v8r-87vc-xw2v
Published 30-03-2026Last modified 01-04-2026

Vulnerability summary

CVE-2026-4789 is a critical (CVSS 9.8) Server-Side Request Forgery vulnerability in kyverno. EPSS estimates a 0.71% chance of exploitation in the next 30 days, higher than 53.5% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 9.8 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.71%
0%100%
Low · +0.06 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 1 · Downstream 2 · Related 4
GHSA-QQRV-2HCH-83Q4OPENSUSE-SU-2026:10613-1OPENSUSE-SU-2026:21483-1CGA-JGW4-WM8Q-JPJ5CGA-P8C4-F73W-RMVJ

Timeline

  1. 30-03-2026
    PublishedVulnerability first disclosed.
  2. 01-04-2026
    Last modifiedVulnerability information updated.

Description

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

CVSS metrics

5 scores · 5 sources · 1 version

EPSS trend

Probability

0.71%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

Increase +0.06 pp

From 0.65% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Chainguard37 products
  • commercial-kyverno-1.16All versions (No fix recorded)
  • commercial-kyverno-1.17< 1.17.2-r0
  • commercial-kyverno-background-controller-1.16All versions (No fix recorded)
  • commercial-kyverno-background-controller-1.17< 1.17.2-r0
  • commercial-kyverno-cleanup-controller-1.16All versions (No fix recorded)
Wolfi13 products
  • kyverno-1.16< 1.16.3-r13
  • kyverno-1.17< 1.17.1-r13
  • kyverno-background-controller-1.16< 1.16.3-r13
  • kyverno-background-controller-1.17< 1.17.1-r13
  • kyverno-cleanup-controller-1.16< 1.16.3-r13
Github.com/kyverno1 product
  • kyverno≥ 1.16.0, < 1.17.0
Kyverno1 product
  • kyvernoEOL1.16.0 | ≥ 1.16.0, ≤ 1.17.1

4 vendors · 52 products

References

8 links