Auth bypass in Scitokens
CVE-2026-32716
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- Scitokens — versions < 1.9.6
- Scitokens Library
Weakness classification (CWE)
References
- github.com/scitokens/scitokens/security/advisories/GHSA-w8fp-g9rh-34jh (Exploit, Vendor Advisory)
- github.com/scitokens/scitokens/commit/7a237c0f642efb9e8c36ac564b745895cca83583 (Patch)
- github.com/scitokens/scitokens/releases/tag/v1.9.6 (Release Notes)
Frequently asked questions
- What is CVE-2026-32716?
- CVE-2026-32716 is a high-severity vulnerability in Scitokens, classified under Improper Authorization. CVSS score: 8.1/10. Published 2026-03-31.
- How severe is CVE-2026-32716?
- High severity. CVSS v3 base score is 8.1 out of 10.