PT-2026-81024 · Joserfc · Joserfc
CVE-2026-75509
·
Published
2026-08-24
·
Updated
2026-08-24
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
joserfc versions prior to 1.7.3
Description
The
JWTClaimsRegistry component incorrectly applies membership matching to list-valued iss and sub claims. This behavior allows an array-valued iss that contains the expected issuer to pass an equality check, which enables a bypass of the issuer validation process.Recommendations
Update to version 1.7.3.
Exploit
Fix
Insufficient Verification of Data Authenticity
Authentication Bypass by Spoofing
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Related Identifiers
Affected Products
Joserfc