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CVE-2020-28042

CVE-2020-28042

EPSS 2.3%
ServiceStack before 5.9.2 mishandles JWT signature verification unless an application has a custom ValidateToken function that establishes a valid minimum length for a signature.
Affected products
n/a · n/a

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References
https://forums.servicestack.net/t/servicestack-v5-9-2-released/8850https://github.com/ServiceStack/ServiceStack/commit/540d4060e877a03ae95343c1a8560a26768585eehttps://www.shielder.it/advisories/servicestack-jwt-signature-verification-bypass/https://www.shielder.it/blog/2020/11/re-discovering-a-jwt-authentication-bypass-in-servicestack/