Summaryinfo

A vulnerability marked as critical has been reported in SciTokens up to 1.9.6. Affected is an unknown function. Performing a manipulation results in path traversal. This vulnerability is cataloged as CVE-2026-32727. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in SciTokens up to 1.9.6. It has been classified as critical. This affects an unknown code. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-32727 since 03/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Upgrading to version 1.9.7 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 2d1cc9e42bc944fe0bbc429b85d166e7156d53f9 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17292). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• SciTokens

Version

• 1.9.0
• 1.9.1
• 1.9.2
• 1.9.3
• 1.9.4
• 1.9.5
• 1.9.6

License

• open-source

Website

• Product: https://github.com/scitokens/scitokens/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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