high8.1
CVE-2026-32727
SciTokens has an Authorization Bypass via Path Traversal in Scope Validation
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| pip | scitokens | < 1.9.7 | 1.9.7 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Scitokens | Scitokens Library | before 1.9.7 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-3x2w-63fp-3qvw
- https://github.com/scitokens/scitokens/security/advisories/GHSA-3x2w-63fp-3qvw
- https://nvd.nist.gov/vuln/detail/CVE-2026-32727
- https://github.com/scitokens/scitokens/pull/230
- https://github.com/scitokens/scitokens/commit/2d1cc9e42bc944fe0bbc429b85d166e7156d53f9
- https://github.com/scitokens/scitokens/releases/tag/v1.9.7