Path Traversal in Scitokens Scitokens-Cpp
CVE-2026-32725
SciTokens C++ is a minimal library for creating and using SciTokens from C or C++. Prior to version 1.4.1, scitokens-cpp is vulnerable to an authorization bypass when processing path-based scopes in tokens. The library normalizes the scope path from the token before authorization and collapses ".." path components instead of rejecting them. As a result, an attacker can use parent-directory traversal in the scope claim to broaden the effective authorization beyond the intended directory. This issue has been patched in version 1.4.1.
EPSS: 0.008 (54.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Scitokens Scitokens-cpp — versions < 1.4.1
- Scitokens Scitokens_cpp_library
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-32725?
- CVE-2026-32725 is a high-severity vulnerability in Scitokens Scitokens-Cpp, classified under Relative Path Traversal. CVSS score: 8.3/10. Published 2026-03-31.
- How severe is CVE-2026-32725?
- High severity. CVSS v3 base score is 8.3 out of 10.