CVE-2024-31033: JJWT improperly generates signing keys

April 1, 2024

JJWT (aka Java JWT) through 0.12.5 ignores certain characters and thus a user might falsely conclude that they have a strong key. The impacted code is the setSigningKey() method within the DefaultJwtParser class and the signWith() method within the DefaultJwtBuilder class.

References

github.com/2308652512/JJWT_BUG
github.com/advisories/GHSA-r65j-6h5f-4f92
github.com/jwtk/jjwt
nvd.nist.gov/vuln/detail/CVE-2024-31033
www.viralpatel.net/java-create-validate-jwt-token

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