CVE-2025-29778 json
Kyverno ignores subjectRegExp and IssuerRegExp
published 2025-03-24 19 mo ago modified 2026-09-10 1 mo ago also BIT-kyverno-2025-29778 , EUVD-2025-7996 , GHSA-46mp-8w32-6g94 , GO-2025-3562
- cvss
- 5.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 28%
- public exploits
- 0
- none known
Summary
Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to version 1.14.0-alpha.1, Kyverno ignores subjectRegExp and IssuerRegExp while verifying artifact's sign with keyless mode. It allows the attacker to deploy kubernetes resources with the artifacts that were signed by unexpected certificate. Deploying these unauthorized kubernetes resources can lead to full compromise of kubernetes cluster. Version 1.14.0-alpha.1 contains a patch for the issue.
Patch / fix
- go github.com/kyverno/kyverno 1.14.0-alpha.1
- bitnami kyverno 1.14.0
- kyverno kyverno 1.14.0-alpha.1
- nirmata kyverno 1.14.0-alpha.1
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250327T184518-1.1
opensuse advisories openSUSE-SU-2025:14937-1
- github.com/kyverno/kyverno@8777672 commit
- github.com/kyverno/kyverno#12237 pull request
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 19 mo ago
Exploit prediction
0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/kyverno/kyverno/security/advisories/GHSA-46mp-8w32-6g94 referenced PoC, tagged "exploit" by a source, unverified
- github.com https://github.com/kyverno/policies/issues/1246 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N |
| GitHub | 3.1 | 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:H/A:N |
| NVD | 3.1 | 8.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
| OSV | 3.1 | 8.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/kyverno/kyverno | >=1.13.0, <1.14.0-alpha.1 <1.14.0-alpha.1 |
1.14.0-alpha.1 |
| bitnami | kyverno | <1.14.0 |
1.14.0 |
Affected products
- kyverno kyverno
Classification
- Weakness
-
- CWE-285 Improper Authorization
References
-
github.com
/kyverno/kyverno/pull/12237
web, issue-tracking, report, patch
-
github.com
/kyverno/kyverno/commit/8777672fb17bdf252bd2e7d8de3441e240404a60
web, patch
-
github.com
/kyverno/kyverno/security/advisories/GHSA-46mp-8w32-6g94
web, exploit, vendor-advisory, advisory
-
github.com
/kyverno/policies/issues/1246
web, exploit, issue-tracking, evidence
-
github.com
/Mohdcode/kyverno/blob/373f942ea9fa8b63140d0eb0e101b9a5f71033f3/pkg/cosign/cosign.go#L537
web, product
-
nvd.nist.gov
/vuln/detail/CVE-2025-29778
advisory, web
-
github.com
/kyverno/kyverno
package
Sources
- CVE List CVE-2025-29778
- GitHub Advisory GHSA-46mp-8w32-6g94
- NVD CVE-2025-29778
- OSV BIT-kyverno-2025-29778
- OSV GO-2025-3562
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.