GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

FKIE_CVE-2026-34054

Vulnerability from fkie_nvd - Published: 2026-03-31 03:15 - Updated: 2026-06-17 10:38
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
security-advisories@github.comhttps://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9
security-advisories@github.comhttps://github.com/microsoft/vcpkg/pull/50518
security-advisories@github.comhttps://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "vcpkg",
          "vendor": "microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.6.1#3"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "vcpkg is a free and open-source C/C++ package manager. Prior to version 3.6.1#3, vcpkg\u0027s 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."
    },
    {
      "lang": "es",
      "value": "vcpkg es un gestor de paquetes C/C++ gratuito y de c\u00f3digo abierto. Antes de la versi\u00f3n 3.6.1#3, las compilaciones de OpenSSL para Windows de vcpkg configuraban openssldir a una ruta en la m\u00e1quina de compilaci\u00f3n, haciendo que esa ruta fuera atacable posteriormente en las m\u00e1quinas de los clientes. Este problema ha sido parcheado en la versi\u00f3n 3.6.1#3."
    }
  ],
  "id": "CVE-2026-34054",
  "lastModified": "2026-06-17T10:38:29.443",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34054",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-01T00:00:00+00:00",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-03-31T03:15:58.593",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/vcpkg/commit/5111afdf55cc1429d9951e4c7b02010e659346a9"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/vcpkg/pull/50518"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/microsoft/vcpkg/security/advisories/GHSA-p322-v6vw-vrq9"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.