ubuntu-cve-2026-32726
Vulnerability from osv_ubuntu
Published
2026-03-31 18:16
Modified
2026-05-20 15:27
Summary
Details

SciTokens C++ is a minimal library for creating and using SciTokens from C or C++. Prior to version 1.4.1, scitokens-cpp is vulnerable to an authorization bypass in path-based scope validation. The enforcer used a simple string-prefix comparison when checking whether a requested resource path was covered by a token's authorized scope path. Because the check did not require a path-segment boundary, a token scoped to one path could incorrectly authorize access to sibling paths that merely started with the same prefix. This issue has been patched in version 1.4.1.

Severity
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libscitokens0",
            "binary_version": "0.7.0-2"
          },
          {
            "binary_name": "scitokens-cpp",
            "binary_version": "0.7.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "scitokens-cpp",
        "purl": "pkg:deb/ubuntu/scitokens-cpp@0.7.0-2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.1-2",
        "0.6.2-1",
        "0.6.2-1ubuntu1",
        "0.6.2-2",
        "0.7.0-1",
        "0.7.0-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libscitokens0t64",
            "binary_version": "1.1.0-1.1build3"
          },
          {
            "binary_name": "scitokens-cpp",
            "binary_version": "1.1.0-1.1build3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "scitokens-cpp",
        "purl": "pkg:deb/ubuntu/scitokens-cpp@1.1.0-1.1build3?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2-1",
        "1.1.0-1",
        "1.1.0-1.1",
        "1.1.0-1.1build2",
        "1.1.0-1.1build3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libscitokens0t64",
            "binary_version": "1.1.3-1"
          },
          {
            "binary_name": "scitokens-cpp",
            "binary_version": "1.1.3-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "scitokens-cpp",
        "purl": "pkg:deb/ubuntu/scitokens-cpp@1.1.3-1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.3-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libscitokens0t64",
            "binary_version": "1.3.0-2"
          },
          {
            "binary_name": "scitokens-cpp",
            "binary_version": "1.3.0-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "scitokens-cpp",
        "purl": "pkg:deb/ubuntu/scitokens-cpp@1.3.0-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.3-1",
        "1.2.0-1",
        "1.3.0-1",
        "1.3.0-2"
      ]
    }
  ],
  "aliases": [],
  "details": "SciTokens C++ is a minimal library for creating and using SciTokens from C or C++. Prior to version 1.4.1, scitokens-cpp is vulnerable to an authorization bypass in path-based scope validation. The enforcer used a simple string-prefix comparison when checking whether a requested resource path was covered by a token\u0027s authorized scope path. Because the check did not require a path-segment boundary, a token scoped to one path could incorrectly authorize access to sibling paths that merely started with the same prefix. This issue has been patched in version 1.4.1.",
  "id": "UBUNTU-CVE-2026-32726",
  "modified": "2026-05-20T15:27:20Z",
  "published": "2026-03-31T18:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-32726"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-32726"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/scitokens/scitokens-cpp/commit/decfe2f00cb9cabbf1e17a3bb2cd4ea1bbbd8a73"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/scitokens/scitokens-cpp/security/advisories/GHSA-q5fm-fgvx-32jq"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-32726"
  ]
}



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