OpsTree BuildPiper before 2.7.0 contains an improper authorization vulnerability that allows authenticated deploy
Source GCVE Database
Not known to be exploited · CVSS 9.4 Critical : upgrade to 2.7.0 as a priority.
Data as of 13 Nov 2026, 13:52 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 9.4 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 9.9 |
- Patch
- Available – fixed in 2.7.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:HExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade BuildPiper and opstree/buildpiper to 2.7.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| OpsTree SolutionsBuildPiper | Affected
| Fixed in
|
GitHubopstree/buildpiperpkg:github/opstree/buildpiperOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A fix is available in OpsTree BuildPiper version 2.7.0 and later. Users should upgrade to version 2.7.0 or above to remediate this vulnerability. Since this is not a cloud service, manual patching is required. No vendor advisory content was provided to indicate alternative mitigations or temporary workarounds.
Description
OpsTree BuildPiper versions before 2.7.0 have an improper authorization vulnerability that allows authenticated deploy users to define arbitrary Kubernetes hostPath volumes without restrictions. This flaw enables attackers to mount the worker node root filesystem with read-write access, breaking container isolation and potentially leading to node and cluster compromise.
References
- nvd.nist.gov/vuln/detail/CVE-2026-127080 (opens in a new tab)
- gist.github.com/neelkotnis/b8c1cf47f829c28086fe78d8187eb938 (opens in a new tab)
- buildpiper.io (opens in a new tab)
- vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-container-escape-via-unrestricted-hostpath-volumes (opens in a new tab)