jwx is a Go module implementing various JWx (JWA/JWE/JWK/JWS/JWT, otherwise known as JOSE) technologies. Calling `jws.Parse` with a JSON serialized payload where the `signature` field is present while `protected` is absent can lead to a nil pointer dereference. The vulnerability can be used to crash/DOS a system doing JWS verification. This vulnerability has been patched in versions 2.0.19 and 1.2.28.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| github.com/lestrrat-go/jwx(Go) | 1.0.8 | 1.2.28 | N/A |
| github.com/lestrrat-go/jwx/v2(Go) | 0 | 2.0.19 | N/A |
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