{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33204", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-17T23:23:58.312Z", "datePublished": "2026-03-20T22:37:13.411Z", "dateUpdated": "2026-03-20T22:37:13.411Z"}, "containers": {"cna": {"title": "SimpleJWT has an Unauthenticated Denial of Service via JWE header tampering", "problemTypes": [{"descriptions": [{"cweId": "CWE-400", "lang": "en", "description": "CWE-400: Uncontrolled Resource Consumption", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x"}, {"name": "https://github.com/kelvinmo/simplejwt/releases/tag/v1.1.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/kelvinmo/simplejwt/releases/tag/v1.1.1"}], "affected": [{"vendor": "kelvinmo", "product": "simplejwt", "versions": [{"version": "< 1.1.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-20T22:37:13.411Z"}, "descriptions": [{"lang": "en", "value": "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."}], "source": {"advisory": "GHSA-xw36-67f8-339x", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-33204", "lastModified": "2026-03-20T23:16:45.677", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-20T23:16:45.677", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/kelvinmo/simplejwt/releases/tag/v1.1.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/kelvinmo/simplejwt/security/advisories/GHSA-xw36-67f8-339x"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}