fast-jwt Affected by Cache Confusion via cacheKeyBuilder Collisions Can Return Claims From a Different Token (Identity/Authorization Mixup)

fast-jwt provides fast JSON Web Token (JWT) implementation. From 0.0.1 to before 6.2.0, setting up a custom cacheKeyBuilder method which does not properly create unique keys for different tokens can lead to cache collisions. This could cause tokens to be mis-identified during the verification process leading to valid tokens returning claims from different valid tokens and users being mis-identified as other users based on the wrong token. Version 6.2.0 contains a patch.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

对数据真实性的验证不充分

fast-jwt 安全漏洞

fast-jwt是Nearform开源的一个 JSON Web Token 实现。 fast-jwt 6.1.0之前版本存在安全漏洞，该漏洞源于自定义cacheKeyBuilder方法未正确创建唯一密钥，可能导致缓存冲突和用户身份误认。

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