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Vulnerability record · CVE-2026-32716 · published 31 March 2026

CVE-2026-32716: Scitokens library improper authorization vulnerability

Scitokens · Scitokens Library

SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.6, the Enforcer incorrectly validates scope paths by using a simple prefix match (startswith). This allows a token with access to a specific path (e.g., /john) to also access sibling paths that start with the same prefix (e.g., /johnathan, /johnny), which is an Authorization Bypass. This issue has been patched in version 1.9.6.

6.5 CVSS 3.1 Medium EPSS 0.43% · top 65.3% CWE-285 · Improper authorization
6.5CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

Description

SciTokens is a reference library for generating and using SciTokens. Prior to version 1.9.6, the Enforcer incorrectly validates scope paths by using a simple prefix match (startswith). This allows a token with access to a specific path (e.g., /john) to also access sibling paths that start with the same prefix (e.g., /johnathan, /johnny), which is an Authorization Bypass. This issue has been patched in version 1.9.6.

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/7a237c0f642efb9e8c36ac564b745895cca83583 Patch
https://github.com/scitokens/scitokens/releases/tag/v1.9.6 Release Notes
https://github.com/scitokens/scitokens/security/advisories/GHSA-w8fp-g9rh-34jh 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-2026-32716), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.