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CVE CVE-2026-33204

CVE-2026-33204

PHP

Severity: HIGH
CVSS: 7.5CVSS
Published: 2026-03-20
Last modified: 2026-03-23
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE: 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.

References

https://github.com/kelvinmo/simplejwt/releases/tag/v1.1.1
https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x

Summary

Description

References