VulnerabilityAnalyzed
CVE-2026-15791
A crafted message in the BuildKit low-level build API can be used to remove the contents of the /tmp directory.
LOW 1.8EPSS 0.25%
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 4.0
- 1.8 LOWCVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- mobyproject/buildkit
- Source
- security@docker.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.