Bug 2449822 (CVE-2026-33204) - CVE-2026-33204 SimpleJWT: SimpleJWT: Denial of Service via JWE header tampering
Summary: CVE-2026-33204 SimpleJWT: SimpleJWT: Denial of Service via JWE header tampering
Keywords:
Status: NEW
Alias: CVE-2026-33204
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-20 23:02 UTC by OSIDB Bzimport
Modified: 2026-03-23 09:45 UTC (History)
11 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-03-20 23:02:08 UTC 
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.
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