Deserialization of Untrusted Data
The github.com/consensys/gnark-crypto in versions prior to 0.12.0 allows Signature Malleability. This occurs because the deserialization of "EdDSA" and "ECDSA" signatures does not ensure that the data is in a certain interval.
CWE-502 - Deserialization of Untrusted Data
Deserialization of untrusted data vulnerabilities enable an attacker to replace or manipulate a serialized object, replacing it with malicious data. When the object is deserialized at the victim's end the malicious data is able to compromise the victim’s system. The exploit can be devastating, its impact may range from privilege escalation, broken access control, or denial of service attacks to allowing unauthorized access to the application's internal code and logic which can compromise the entire system.