PT-2026-29186 · Microsoft · Vcpkg

Published 2026-03-31 · Updated 2026-03-31 · CVE-2026-34054

Mitre

CVSS v3.1

7.8

High

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Uncontrolled Search Path Element

Weakness Enumeration

CWE-427

Related Identifiers

CVE-2026-34054

Affected Products

Vcpkg

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-34054 · Security Note
• https://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9 · Note
• https://github.com/microsoft/vcpkg/pull/50518 · Note
• https://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9 · Note