CVE-2020-28042

PoC ×2—

CVSS 3.1

5.3 medium

EPSS

2%p83

Published

Nov 2, 2020 (Nov 2, 2020)

Modified

Jun 17, 2026

Description

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.

Vendors: servicestack
Products: servicestack
Weakness: CWE-347
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (2.3%)

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