CVE-2026-32726 HIGH

CVE-2026-32726: SciTokens C++: Sibling-Path Authorization Bypass

Vendor Scitokens
Product scitokens-cpp
Weakness CWE-863 · Incorrect authorization
Published March 31, 2026
Last update March 31, 2026

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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 in path-based scope validation. The enforcer used a simple string-prefix comparison when checking whether a requested resource path was covered by a token's authorized scope path. Because the check did not require a path-segment boundary, a token scoped to one path could incorrectly authorize access to sibling paths that merely started with the same prefix. This issue has been patched in version 1.4.1.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
March 31, 2026 Record updated

Related vulnerabilities

04Related CVE