CVE-2026-34054 | Microsoft vcpkg up to 3.6.1#2 OpenSSL uncontrolled search path (GHSA-p322-v6vw-vrq9)

VDB-354301 · CVE-2026-34054 · GHSA-P322-V6VW-VRQ9 MICROSOFT VCPKG UP TO 3.6.1#2 OPENSSL UNCONTROLLED SEARCH PATH HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 7.2 $0-$5k 1.48+ Summaryinfo A vulnerability has been found in Microsoft vcpkg up to 3.6.1#2 and classified as problematic. This affects an unknown part of the component OpenSSL. This manipulation causes uncontrolled search path. This vulnerability is handled as CVE-2026-34054. It is possible to launch the attack on the local host. There is not any exploit available. The affected component should be upgraded. Detailsinfo A vulnerability was found in Microsoft vcpkg up to 3.6.1#2. It has been declared as critical. Affected by this vulnerability is an unknown part of the component OpenSSL. The manipulation with an unknown input leads to a uncontrolled search path vulnerability. The CWE definition for the vulnerability is CWE-427. The product uses a fixed or controlled search path to find resources, but one or more locations in that path can be under the control of unintended actors. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is: 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. The advisory is shared at github.com. This vulnerability is known as CVE-2026-34054 since 03/25/2026. The exploitation appears to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/31/2026). MITRE ATT&CK project uses the attack technique T1574 for this issue. Upgrading to version 3.6.1#3 eliminates this vulnerability. Applying the patch 5111afdf55cc1429d9951e4c7b02010e659346a9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Vendor Microsoft Name vcpkg Version 3.6.1#2 License commercial Website Vendor: https://www.microsoft.com/ Product: https://github.com/microsoft/vcpkg/ CPE 2.3info 🔒 CPE 2.2info 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 7.4 VulDB Meta Temp Score: 7.2 VulDB Base Score: 7.0 VulDB Temp Score: 6.7 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 7.8 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Uncontrolled search path CWE: CWE-427 / CWE-426 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: No Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: vcpkg 3.6.1#3 Patch: 5111afdf55cc1429d9951e4c7b02010e659346a9 Timelineinfo 03/25/2026 CVE reserved 03/31/2026 +5 days Advisory disclosed 03/31/2026 +0 days VulDB entry created 03/31/2026 +0 days VulDB entry last update Sourcesinfo Vendor: microsoft.com Product: github.com Advisory: GHSA-p322-v6vw-vrq9 Status: Confirmed CVE: CVE-2026-34054 (🔒) GCVE (CVE): GCVE-0-2026-34054 GCVE (VulDB): GCVE-100-354301 Entryinfo Created: 03/31/2026 08:04 Changes: 03/31/2026 08:04 (67) Complete: 🔍 Cache ID: 99:B75:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸