CVE-2026-32727
High
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.
SeverityHigh
CVSS8.1
Exploit probability—
ProductScitokens Library
PublishedMar 31, 2026
First seenMar 31, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- scitokens scitokens_library1.9.7 or later
- scitokens1.9.7 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| scitokens scitokens_library | v < 1.9.7 | 1.9.7 |
| scitokensPyPI | v < 1.9.7 | 1.9.7 |
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