What’s Vulnerable › Vulnerabilities

CVE-2026-32716: SciTokens: Authorization Bypass via Incorrect Scope Path Prefix Checking

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-03-31 · updated 2026-06-17
• Weakness: CWE-285

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.

Affected products

• scitokens: before 1.9.6 — fixed in 1.9.6

How to fix

Upgrade to a fixed version: scitokens 1.9.6. Check the vendor advisory for mitigations.

References

• https://github.com/scitokens/scitokens/commit/7a237c0f642efb9e8c36ac564b745895cca83583
• https://github.com/scitokens/scitokens/releases/tag/v1.9.6
• https://github.com/scitokens/scitokens/security/advisories/GHSA-w8fp-g9rh-34jh

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