CVE-2026-32726
HIGHSciTokens C++: Sibling-Path Authorization Bypass
Title source: cnaDescription
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.
Scores
CVSS v3
8.1
EPSS
0.0003
EPSS Percentile
9.7%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-863
Status
published
Products (2)
scitokens/scitokens-cpp
< 1.4.1
scitokens/scitokens_cpp_library
< 1.4.1
Published
Mar 31, 2026
Tracked Since
Mar 31, 2026