CVE-2026-32727

HIGH

SciTokens: Authorization Bypass via Path Traversal in Scope Validation

Title source: cna

Description

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