Description
An insufficiently secured internal function allows session generation for arbitrary users. The decodeParam function checks the JWT but does not verify which signing algorithm was used. As a result, an attacker can use the "ex:action" parameter in the VerifyUserByThrustedService function to generate a session for any user.
Problem types
CWE-347 Improper Verification of Cryptographic Signature
Product status
Any version before 2025.MS2
Credits
Maciej Kazulak
References
cert.pl/en/posts/2025/08/CVE-2025-2313/
