CVE-2026-15791
3.3
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| moby | BuildKit | 0.10.0 < 0.31.2 | affected |
Weaknesses
- CWE-22: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Workarounds
The issue only affects the low-level API and can not be reached when building Dockerfiles. Using a custom BuildKit frontend would be needed to make such a crafted request.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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