CVE-2026-35039
Last modified
CVE-2026-35039 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.21% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nearform | Fast-Jwt | >= 0.1.0, < 6.1.0 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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