Most recent entries from all

EUVD-2026-31502

fkie_cve-2021-41106

JWT is a library to work with JSON Web Token and JSON Web Signature. Prior to versions 3.4.6, 4.0.4, and 4.1.5, users of HMAC-based algorithms (HS256, HS384, and HS512) combined with `Lcobucci\JWT\Signer\Key\LocalFileReference` as key are having their tokens issued/validated using the file path as hashing key - instead of the contents. The HMAC hashing functions take any string as input and, since users can issue and validate tokens, users are lead to believe that everything works properly. Versions 3.4.6, 4.0.4, and 4.1.5 have been patched to always load the file contents, deprecated the `Lcobucci\JWT\Signer\Key\LocalFileReference`, and suggest `Lcobucci\JWT\Signer\Key\InMemory` as the alternative. As a workaround, use `Lcobucci\JWT\Signer\Key\InMemory` instead of `Lcobucci\JWT\Signer\Key\LocalFileReference` to create the instances of one's keys.

GHSA-7322-jrq4-x5hf — File reference keys leads to incorrect hashes on HMAC algorithms

Affected: Packagist: lcobucci/jwt

### Impact

Users of HMAC-based algorithms (HS256, HS384, and HS512) combined with `Lcobucci\JWT\Signer\Key\LocalFileReference` as key are having their tokens issued/validated using the file path as hashing key - instead of the contents.

The HMAC hashing functions take any string as input and, since users can issue and validate tokens, people are lead to believe that everything works properly.

### Patches

All versions have been patched to always load the file contents, deprecated the `Lcobucci\JWT\Signer\Key\LocalFileReference`, and suggest `Lcobucci\JWT\Signer\Key\InMemory` as the alternative.

### Workarounds

Use `Lcobucci\JWT\Signer\Key\InMemory` instead of `Lcobucci\JWT\Signer\Key\LocalFileReference` to create the instances of your keys:

```diff -use Lcobucci\JWT\Signer\Key\LocalFileReference; +use Lcobucci\JWT\Signer\Key\InMemory;

-$key = LocalFileReference::file(__DIR__ . '/public-key.pem'); +$key = InMemory::file(__DIR__ . '/public-key.pem'); ```

Most recent entries from all

EUVD-2026-31502

fkie_cve-2021-41106

GHSA-7322-jrq4-x5hf — File reference keys leads to incorrect hashes on HMAC algorithms

gsd-2021-41106