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.
Scores
CVSS v3
8.1
EPSS
0.0002
EPSS Percentile
3.6%
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