CVE-2026-15791CWE-22path-traversal
CVE-2026-15791
High · published July 21, 2026
What it is
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.
The record
Technical detail
- CVSS v3.1
- 7.5 · HIGH
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS v4.0
- Not supplied
- EPSS
- 0.00249 · 15.3th percentile
- Weakness
- CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
- Published
- 2026-07-21T21:17Z
Affected products (1)
| Product | Versions | Fixed in |
|---|
| mobyproject/buildkit | < 0.31.2 | 0.31.2 |
References (1)
EPSS history
Timeline