CVE-2026-33204

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Source
https://cve.org/CVERecord?id=CVE-2026-33204
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33204.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33204
Aliases
Published
2026-03-20T22:37:13.411Z
Modified
2026-07-08T08:00:19.409216735Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
SimpleJWT has an Unauthenticated Denial of Service via JWE header tampering
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33204.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ]
}
References

Affected packages

Git / github.com/kelvinmo/simplejwt

Affected ranges

Type
GIT
Repo
https://github.com/kelvinmo/simplejwt
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c633d9d85837e60bdd4c65b4e3a3da12d22c0605
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE",
        "REFERENCES"
    ],
    "cpe": "cpe:2.3:a:kelvinmo:simplejwt:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.1.1"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.3.0
v0.3.1
v0.4.0
v0.4.1
v0.5.0
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
v0.8.0
v0.9.0
v1.*
v1.0.0
v1.0.1
v1.1.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33204.json"