{"id":"CVE-2026-32726","aliases":["DEBIAN-CVE-2026-32726","EUVD-2026-17563","GHSA-q5fm-fgvx-32jq","UBUNTU-CVE-2026-32726"],"status":"published","title":"SciTokens C++: Sibling-Path Authorization Bypass","description":"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":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00277,"percentile":0.20361,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-03-31T17:01:24Z","modified":"2026-10-28T11:11:10Z","fixes":[{"ecosystem":"Debian:14","package":"scitokens-cpp","fixed_in":["1.4.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.3-1","1.0.2-1","1.1.0-1","1.1.0-1.1","1.1.0-1.1~exp1","1.1.0-2","1.1.1-1","1.1.2-1","1.1.2-2","1.1.3-1","1.2.0-1","1.3.0-1","1.3.0-2","1.4.0-1","1.4.1-1","1.4.1-2","1.4.1-3"]},{"source":"osv","ecosystem":"Debian:13","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.2.0-1","1.3.0-1","1.3.0-2","1.4.0-1","1.4.1-1","1.4.1-2","1.4.1-3"]},{"source":"osv","ecosystem":"Debian:14","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.1-1"}]}],"versions":["1.1.3-1","1.2.0-1","1.3.0-1","1.3.0-2","1.4.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0.2-1","1.1.0-1","1.1.0-1.1","1.1.0-1.1build2","1.1.0-1.1build3"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.0-2","1.4.1-1","1.4.1-3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"scitokens-cpp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.2.0-1","1.3.0-1","1.3.0-2"]}],"products":[{"vendor":"scitokens","product":"scitokens-cpp"},{"vendor":"scitokens","product":"scitokens_cpp_library"}],"references":[{"url":"https://github.com/scitokens/scitokens-cpp/security/advisories/GHSA-q5fm-fgvx-32jq","tags":["x_refsource_CONFIRM","exploit","Exploit","Vendor Advisory","advisory","report"]},{"url":"https://github.com/scitokens/scitokens-cpp/commit/decfe2f00cb9cabbf1e17a3bb2cd4ea1bbbd8a73","tags":["x_refsource_MISC","Patch","fix","report"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32726.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32726","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-32726","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-32726","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-32726","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-32726","title":"SciTokens C++: Sibling-Path Authorization Bypass","description":"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.","status":"published","published":"2026-03-31T17:01:24.882Z","modified":"2026-03-31T19:09:02.06Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:19:57.100857Z"}],"euvd":[{"id":"EUVD-2026-17563","description":"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.","status":"published","published":"2026-03-31T17:01:24Z","modified":"2026-03-31T19:09:02Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T19:25:24.891983Z"}],"nvd":[{"id":"CVE-2026-32726","description":"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.","status":"published","published":"2026-03-31T18:16:50.997Z","modified":"2026-07-24T20:10:00.147Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-32726","title":"SciTokens C++: Sibling-Path Authorization Bypass","description":"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.","status":"published","published":"2026-03-31T17:01:24.882Z","modified":"2026-10-28T11:11:10.408109678Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"DEBIAN-CVE-2026-32726","description":"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.","status":"published","published":"2026-03-31T18:16:50.997Z","modified":"2026-10-01T03:03:10.666283591Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:45:54.232518Z"},{"id":"UBUNTU-CVE-2026-32726","description":"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.","status":"published","published":"2026-03-31T18:16:00Z","modified":"2026-10-17T12:59:58.594039359Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:56:16.036833Z"}]}}