CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, при специфични условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.3.4, the fast-jwt createVerifier cache can continue accepting a previously valid, signed JWT after its exp time when caching is enabled and the token has exp but no iat. In src/verifier.js, cacheSet derives the exp cache deadline only when iat is present, so the cache falls back to cacheTTL, and a later cache hit returns the saved payload before verifyToken rechecks expiration. An attacker who can replay the same cached bearer token can extend access until the cache entry expires, but cannot forge a token through this issue. This issue is fixed in version 6.3.4.
Засегнати продукти
- nearform fast-jwt: < 6.3.4
Вид слабост
История
- 8 октомври 2026 Публикувано
Други уязвимости в nearform fast-jwt
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-107719
- https://nvd.nist.gov/vuln/detail/CVE-2026-107719
- https://github.com/nearform/fast-jwt/security/advisories/GHSA-x937-hj6v-793p
- https://github.com/nearform/fast-jwt/commit/fc1ddbbe5ce38066ba2cea0b0ce0233932757167
- https://github.com/nearform/fast-jwt/releases/tag/v6.3.4