CVE-2026-127073
OpsTree BuildPiper before 2.7.0 Privilege Escalation via Additional Manifest
OpsTree BuildPiper before 2.7.0 contains a privilege escalation vulnerability that allows project users to gain Kubernetes cluster-admin rights by submitting unrestricted manifests through the Additional Manifest feature. Attackers can deploy a ClusterRoleBinding binding a service account to cluster-admin, which the pipeline applies with cluster-wide credentials, granting control over all workloads and secrets.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| BuildPiper OpsTree Solutions |
≥ 0; < 2.7.0 (affected, semver)
Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | CNA: VulnCheck |
| 3.1 / 9.9 critical |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | CNA: VulnCheck |
| 4.0 / 9.4 critical |
CVSS:4.0/AV:N/AC:L/AT:N/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 | NVD: [email protected] |
| 3.1 / 9.9 critical |
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | NVD: [email protected] |
Exploit evidence
- https://gist.github.com/neelkotnis/7bc715e190e5be2c2fc5be15c4035ce7
exploit · CNA: VulnCheck
References
- https://gist.github.com/neelkotnis/7bc715e190e5be2c2fc5be15c4035ce7CNA: VulnCheck · technical-description, exploit
- https://www.buildpiper.io/CNA: VulnCheck · product
- https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-privilege-escalation-via-additional-manifestCNA: VulnCheck · third-party-advisory
- https://gist.github.com/neelkotnis/7bc715e190e5be2c2fc5be15c4035ce7[email protected]
- https://www.buildpiper.io/[email protected]
- https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-privilege-escalation-via-additional-manifest[email protected]
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