{"id":"CVE-2026-34054","aliases":["EUVD-2026-17285","GHSA-p322-v6vw-vrq9"],"status":"published","title":"openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)","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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00743,"percentile":0.55172,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-427"],"published":"2026-03-31T01:56:14Z","modified":"2026-10-28T02:31:12Z","products":[{"vendor":"microsoft","product":"vcpkg"}],"references":[{"url":"https://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/microsoft/vcpkg/pull/50518","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34054.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34054","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-34054","title":"openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)","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.","status":"published","published":"2026-03-31T01:56:14.585Z","modified":"2026-04-02T03:55:58.861Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:20:13.962274Z"}],"euvd":[{"id":"EUVD-2026-17285","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.","status":"published","published":"2026-03-31T01:56:14Z","modified":"2026-04-02T03:55:58Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:25:23.620594Z"}],"nvd":[{"id":"CVE-2026-34054","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.","status":"published","published":"2026-03-31T03:15:58.593Z","modified":"2026-06-17T10:38:29.443Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-34054","title":"openssl on Windows built with openssldir set from the build machine (Uncontrolled Search Path Element)","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.","status":"published","published":"2026-03-31T01:56:14.585Z","modified":"2026-10-28T02:31:12.029604381Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T15:45:02.247031Z"}]}}