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CVE

CVE-2026-61549

Woodpecker: Privilege escalation via unrestricted serviceAccountName in the Kubernetes backend
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CVE

CVE-2026-61549

Woodpecker: Privilege escalation via unrestricted serviceAccountName in the Kubernetes backend

Woodpecker is a CI/CD engine. From 1.0.0 until 3.16.0, pipeline/backend/kubernetes/backendoptions.go defines backendoptions.kubernetes.serviceAccountName, and the Kubernetes backend in pipeline/backend/kubernetes/pod.go copies that pipeline-step value directly into the pod specification without administrator authorization. Any user with Push permission on a connected repository can therefore run pipeline pods under an arbitrary ServiceAccount in the pipeline namespace and inherit that account's RBAC permissions. When a privileged ServiceAccount is reachable, the attacker can exfiltrate secrets such as database credentials, API keys, and TLS certificates and may take over the cluster. This issue is fixed in version 3.16.0.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9
-
4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/woodpecker-ci/woodpecker/releases/tag/v3.16.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61549.json, https://github.com/woodpecker-ci/woodpecker/security/advisories/GHSA-qf34-295c-26v8, https://nvd.nist.gov/vuln/detail/CVE-2026-61549, https://github.com/woodpecker-ci/woodpecker/commit/5df9d52260626c074c6caafb2dc83d3bc6b53be1, https://github.com/woodpecker-ci/woodpecker/commit/609ba481b5e912f59aaae8ca7bc22b44523c5e37, https://github.com/woodpecker-ci/woodpecker/pull/6792

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00278%
EPSS Percentile
0.20258%
Introduced Version
1f09a8730d414cf9cb996ddc773f551fcc1a6f1f
Fix Available
609ba481b5e912f59aaae8ca7bc22b44523c5e37

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