MEDIUM 6.5

PYSEC-2026-2276

Details

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.

Are you affected?

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Affected packages

PyPI / scitokens

Introduced in: 0 Fixed in: 1.9.6

Fix pip install --upgrade 'scitokens>=1.9.6'

References

https://github.com/scitokens/scitokens/releases/tag/v1.9.6 [ADVISORY]
https://github.com/scitokens/scitokens/commit/7a237c0f642efb9e8c36ac564b745895cca83583 [FIX]
https://github.com/scitokens/scitokens/security/advisories/GHSA-w8fp-g9rh-34jh [EVIDENCE]