CVE-2026-34054

openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)

State: Published
Severity: 7.8 High
Published: Mar 31, 2026
Updated: Apr 2, 2026
Reserved: Mar 25, 2026

Description

vcpkg is a free and open-source C/C++ package manager. Prior to version 3.6.1#3, vcpkg's Windows builds of OpenSSL set openssldir to a path on the build machine, making that path be attackable later on customer machines. This issue has been patched in version 3.6.1#3.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	GitHub_M

Weaknesses

CWE-427 Uncontrolled Search Path Element

Affected Products

Product	Versions
vcpkgmicrosoft	< 3.6.1#3Affected

References

https://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9
https://github.com/microsoft/vcpkg/pull/50518
https://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9

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