Vulnerability-Lookup

CVE-2026-32726 (GCVE-0-2026-32726)

Vulnerability from cvelistv5 – Published: 2026-03-31 17:01 – Updated: 2026-03-31 19:09

Title

SciTokens C++: Sibling-Path Authorization Bypass

Summary

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

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M

References

2 references

URL	Tags
https://github.com/scitokens/scitokens-cpp/securi…	x_refsource_CONFIRM
https://github.com/scitokens/scitokens-cpp/commit…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
scitokens	scitokens-cpp	Affected: < 1.4.1

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-32726

Vulnerability from fkie_nvd - Published: 2026-03-31 18:16 - Updated: 2026-06-17 10:36

Severity

8.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/scitokens/scitokens-cpp/commit/decfe2f00cb9cabbf1e17a3bb2cd4ea1bbbd8a73	Patch
security-advisories@github.com	https://github.com/scitokens/scitokens-cpp/security/advisories/GHSA-q5fm-fgvx-32jq	Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/scitokens/scitokens-cpp/security/advisories/GHSA-q5fm-fgvx-32jq	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	scitokens	scitokens_cpp_library	*

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "scitokens-cpp",
          "vendor": "scitokens",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:scitokens:scitokens_cpp_library:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "CC9F84FE-5692-462D-BA2B-D9703D8AFAD1",
              "versionEndExcluding": "1.4.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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": "CVE-2026-32726",
  "lastModified": "2026-06-17T10:36:16.717",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
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        "impactScore": 5.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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}

ubuntu-cve-2026-32726

Vulnerability from osv_ubuntu

Published

2026-03-31 18:16

Modified

2026-05-20 15:27

Summary

Details

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

URL

Type

	https://ubuntu.com/security/CVE-2026-32726	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-32726	REPORT
	https://github.com/scitokens/scitokens-cpp/commit…	REPORT
	https://github.com/scitokens/scitokens-cpp/securi…	REPORT

JSON

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"
  ]
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-32726 (GCVE-0-2026-32726)

FKIE_CVE-2026-32726

ubuntu-cve-2026-32726

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature