Skip to content
CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-33204

SimpleJWT has an Unauthenticated Denial of Service via JWE header tampering

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

kelvinmo simplejwt

  • < 1.1.1affected

References