Name: CVE-2026-75593: Improper Limitation of a Pathname to a Restricted Directory
Creator: Rapid7
Published: 2026-08-19T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-75593, CWE-22, CVSS 7.2, EPSS 0.00541

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, a custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access BuildKit control API to issue builds, eg., bypass authentication, etc. This issue is fixed in version 0.31.2.

CVSS Details

CVSS 4.0 Base Score: 7.2 (HIGH)
CVSS 4.0 Vector: (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Amazon Linux Ami 2	—	Upgrade runfinch-finch	Oct 19, 2026	Oct 19, 2026
Amazon_linux_2023	—	Upgrade runfinch-finch	Sep 30, 2026	Aug 19, 2026
Redhat_linux	—	No solution exists	Sep 7, 2026	Aug 19, 2026

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CVSS Details

Covered by Rapid7

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