light-oauth2 before version 2.1.27 obtains the public key without any verification. This could allow attackers to authenticate to the application with a crafted JWT token.
https://github.com/networknt/light-oauth2/issues/369
https://github.com/KANIXB/JWTIssues/blob/main/Certification%20Verification%20issue%20in%20light-oauth2.md
Source: Mitre, NVD
Published: 2023-10-25
Updated: 2026-06-17
Base Score: 5.4
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS: 0.00197