{"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":"2026-03-24T15:34:35.165Z"},"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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-24T15:33:43.475530Z","id":"CVE-2026-33204","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-03-24T15:34:35.165Z"}}]}}