critical9.8
CVE-2026-4789
Kyverno has SSRF via CEL http.Get/http.Post in NamespacedValidatingPolicy allows cross-namespace data access
Impact
Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/kyverno/kyverno | >= 1.16.0, < 1.17.0 | 1.17.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Kyverno | Kyverno | from 1.16.0 through 1.17.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-rggm-jjmc-3394
- https://github.com/kyverno/kyverno/security/advisories/GHSA-rggm-jjmc-3394
- https://nvd.nist.gov/vuln/detail/CVE-2026-4789
- https://github.com/kyverno/kyverno/pull/15729
- https://www.kb.cert.org/vuls/id/655822
- https://github.com/kyverno/kyverno
- https://kb.cert.org/vuls/id/655822
- https://portswigger.net/web-security/ssrf