CVE-2026-33204
CVE-2026-33204 · SimpleJWT has an Unauthenticated Denial of Service via JWE header tampering
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.5 · High · EPSS 0.5% · Fix available
- Published
- Updated
Stack: php
Affected products and versions
simplejwt
- Versions
- < 1.1.1: Affected
No fix published
kelvinmo/simplejwt Packagist
- Versions
- v0.1.0
- v0.1.1
- v0.1.2
- v0.1.3
- v0.1.4
- v0.1.5
- v0.1.6
- v0.2.1
- v0.2.2
- v0.2.3
- v0.2.4
- v0.2.5
- v0.3.0
- v0.3.1
- v0.4.0
- v0.4.1
- v0.4.2
- v0.5.0
- v0.5.1
- v0.5.2
- v0.5.3
- v0.6.0
- v0.6.0-rc.1
- v0.6.0-rc.2
- v0.6.1
- v0.6.2
- v0.6.3
- v0.7.0
- v0.7.1
- v0.8.0
- v0.8.1
- v0.8.2
- v0.9.0
- v0.9.1
- v0.9.2
- v0.9.3
- v1.0.0
- v1.0.1
- v1.0.2
- v1.0.3
- v1.1.0
- Affected ranges
- ECOSYSTEM: < 1.1.1
Update to 1.1.1