CVEvulnerability
CVE-2026-33204
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-03-20
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-400
Description
SimpleJWT is a simple JSON web token library written in PHP. Prior to version 1.1.1, an unauthenticated attacker can perform a Denial of Service via JWE header tampering when PBES2 algorithms are used. Applications that call JWE::decrypt() on attacker-controlled JWEs using PBES2 algorithms are affected. This issue has been patched in version 1.1.1.
Affected configurations
• kelvinmo simplejwt (< 1.1.1)
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://github.com/kelvinmo/simplejwt/releases/tag/v1.1.1 Product, Release Notes
- https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x Exploit, Vendor Advisory