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Vulnerability record · CVE-2026-32727 · published 31 March 2026

CVE-2026-32727: Scitokens library path traversal vulnerability

Scitokens · Scitokens Library

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.

6.5 CVSS 3.1 Medium EPSS 0.53% · top 57.6% CWE-22 · Path traversal
6.5CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/scitokens/scitokens/commit/2d1cc9e42bc944fe0bbc429b85d166e7156d53f9 Patch
https://github.com/scitokens/scitokens/pull/230 Issue Tracking
https://github.com/scitokens/scitokens/releases/tag/v1.9.7 Release Notes
https://github.com/scitokens/scitokens/security/advisories/GHSA-3x2w-63fp-3qvw ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-32727), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.