CVE-2026-32727
HIGHSciTokens: Authorization Bypass via Path Traversal in Scope Validation
Title source: cnaDescription
SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.7, the Enforcer is vulnerable to a path traversal attack where an attacker can use dot-dot (..) in the scope claim of a token to escape the intended directory restriction. This occurs because the library normalizes both the authorized path (from the token) and the requested path (from the application) before comparing them using startswith. This issue has been patched in version 1.9.7.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/scitokens/scitokens/security/advisories/GHSA-3x2w-63fp-3qvw
X_Refsource_Misc x_refsource_misc
https://github.com/scitokens/scitokens/pull/230
X_Refsource_Misc x_refsource_misc
https://github.com/scitokens/scitokens/commit/2d1cc9e42bc944fe0bbc429b85d166e7156d53f9
X_Refsource_Misc x_refsource_misc
https://github.com/scitokens/scitokens/releases/tag/v1.9.7
Scores
CVSS v3
8.1
EPSS
0.0052
EPSS Percentile
39.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-22
Status
published
Products (3)
pypi/scitokens
0 - 1.9.7PyPI
scitokens/scitokens
< 1.9.7
scitokens/scitokens_library
< 1.9.7
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026