Vulnerability DatabaseCVE-2026-15791
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CVE-2026-15791
Published:July 21, 2026
Updated:August 06, 2026
A crafted message in the BuildKit low-level build API can be used to remove the contents of the /tmp directory. The action that can normally be used to delete files inside the build container rootfs can escape into the real host temp directory.
Affected Packages
github.com/moby/buildkit (GO):
Affected version(s) >=v0.0.0-20151214135952-e09818357f19 <v0.31.2
Fix Suggestion:
Update to version v0.31.2
Related Resources (3)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/15xxx/CVE-2026-15791.json
https://github.com/moby/buildkit/security/advisories/GHSA-32pv-7hq5-qhwq
https://nvd.nist.gov/vuln/detail/CVE-2026-15791
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CVSS v4
Base Score:
1.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.4
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.25