CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.2.1, using certain modifiers on RegExp objects in the allowedAud, allowedIss, allowedSub, allowedJti, or allowedNonce options in verify functions can cause certain unintended behaviours. This is because some modifiers are stateful and will cause failures in every second verification attempt regardless of the validity of the token provided. Such modifiers are /g (global matching) and /y (sticky matching). This does NOT allow invalid tokens to be accepted, only for valid tokens to be improperly rejected in some configurations. Instead it causes 50% of valid authentication requests to fail in an alternating pattern. This vulnerability is fixed in 6.2.1.
Засегнати продукти
- nearform fast-jwt: < 6.2.1
Вид слабост
История
- 9 април 2026 Публикувано
Други уязвимости в nearform fast-jwt
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-35040
- https://nvd.nist.gov/vuln/detail/CVE-2026-35040
- https://github.com/nearform/fast-jwt/security/advisories/GHSA-3j8v-cgw4-2g6q
- https://github.com/nearform/fast-jwt/pull/593
- https://github.com/nearform/fast-jwt/commit/18d25904e4617e8753526d1b3ab5a2cccdea726a
- https://github.com/nearform/fast-jwt/releases/tag/v6.2.1