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CVE-2026-127074VulnerabilityPublished

OpsTree BuildPiper before 2.7.0 contains a path traversal vulnerability that allows authenticated users with build

Source GCVE Database

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Authoritative record:CVE-2026-127074· Medium 5.3

Not known to be exploited · CVSS 5.3 Medium : upgrade to 2.7.0 when convenient.

Data as of 13 Nov 2026, 13:53 UTC

CVSS 4.0 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.05.3
CNA (VulnCheck)CVSS 3.14.3
Patch
Available – fixed in 2.7.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq 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 to 2.7.0.

Affected software

ProductAffectedFixed in
OpsTree SolutionsBuildPiperAffected
  • <2.7.0
Fixed in
  • 2.7.0

AI-suggested

Upgrade to OpsTree BuildPiper version 2.7.0 or later, where this path traversal vulnerability is fixed. Until upgrading, restrict build configuration permissions to trusted users only to mitigate risk.

Description

OpsTree BuildPiper versions prior to 2.7.0 have a path traversal vulnerability that allows authenticated users with build configuration permissions to read arbitrary files on the build worker. This is achieved by supplying unvalidated dockerfile_path and build context values, enabling attackers to specify traversal or absolute paths such as /etc/passwd. The file contents are then disclosed in the build log when a build is triggered.

References

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