CVE-2026-33204
High · 7.5CVSS
7.5
EPSS
0.6%
Published
Mar 20, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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