Review reviewHigh

CVE-2026-32725

scitokens scitokens-cpp, scitokens cpp library

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.

CVSS: 8.3
EPSS: 0.83%
CISA KEV: Not listed
Published: 2026.04.01

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.83%

Technical severityCVSS 8.3

Vulnerability overview

Affected product and versions

Product: scitokens scitokens-cpp, scitokens cpp library
Affected versions: >= < 1.4.1, < 1.4.1
Fixed versions: 1.4.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that scitokens scitokens-cpp, scitokens cpp library and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE: CWE-23