CVE-2026-4789

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 6.4%
KEV: Not listed

Published

March 30, 2026

Last Modified

April 3, 2026

Advisory Details (4)

Auto-updated May 18, 2026

No patch confirmed yet. Sources: cert.

cert

VU#655822 - Kyverno is vulnerable to server-side request forgery (SSRF)

https://www.kb.cert.org/vuls/id/655822

generic

What is SSRF (Server-side request forgery)? Tutorial & Examples | Web Security Academy

https://portswigger.net/web-security/ssrf

cert

VU#655822 - Kyverno is vulnerable to server-side request forgery (SSRF)

https://kb.cert.org/vuls/id/655822

generic

GitHub - kyverno/kyverno: Unified Policy as Code · GitHub

https://github.com/kyverno/kyverno

Affected Packages

(1 across 1 ecosystem)

Go(1)

Package	Vulnerable range	Fixed in	Dependents
github.com/kyverno/kyverno	—	1.17.0	—

Data Freshness Timeline

(refreshed 12× in last 7d / 17× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-23 00:09 UTCEG score recompute
2026-05-21 22:43 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 19:54 UTCEG score recompute
2026-05-20 11:22 UTCepss_batch

Frequently asked(5)

What is CVE-2026-4789?

CVE-2026-4789 is a critical vulnerability published on March 30, 2026. Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.

When was CVE-2026-4789 disclosed?

CVE-2026-4789 was first published in the National Vulnerability Database on March 30, 2026, with the most recent update on April 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-4789 actively exploited?

CVE-2026-4789 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 6.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-4789?

CVE-2026-4789 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2026-4789?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-4789, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-4789

📅 Published

🔄 Last Modified

📋 Advisory Details (4)

VU#655822 - Kyverno is vulnerable to server-side request forgery (SSRF)

What is SSRF (Server-side request forgery)? Tutorial & Examples | Web Security Academy

VU#655822 - Kyverno is vulnerable to server-side request forgery (SSRF)

GitHub - kyverno/kyverno: Unified Policy as Code · GitHub

Affected Packages

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2026-4789?

Published

Last Modified

Advisory Details (4)

Frequently asked(5)