CVE-2026-15791

HIGHCVSS 7.5/10EPSS 0.14%

Last modified

CVE-2026-15791 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
MobyprojectBuildkit< 0.31.2

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-15791?
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.
How severe is CVE-2026-15791?
CVE-2026-15791 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-15791?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST