{"api_version":"1","generated_at":"2026-11-04T11:44:51+00:00","cve":"CVE-2026-120640","urls":{"html":"https://cve.report/CVE-2026-120640","api":"https://cve.report/api/cve/CVE-2026-120640.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-120640","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-120640"},"summary":{"title":"CGI versions before 5.00 for Perl allow the POSTDATA, PUTDATA, PATCHDATA and XForms:Model parameters to be set from the query string or form fields","description":"CGI versions before 5.00 for Perl allow the POSTDATA, PUTDATA, PATCHDATA and XForms:Model parameters to be set from the query string or form fields.\n\nCGI stores a non-form request body under POSTDATA, PUTDATA or PATCHDATA, and an XForms body under XForms:Model, but also accepts these names from the query string, a form field or a multipart part, so an application cannot tell a client-sent value from the real body.\n\nA cross-site HTML form can post 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versions before 5.00 for Perl allow the POSTDATA, PUTDATA, PATCHDATA and XForms:Model parameters to be set from the query string or form fields","workarounds":[{"lang":"en","value":"For deployments that cannot upgrade, check the request Content-Type before trusting param('POSTDATA')."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}}},"cveMetadata":{"assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","assignerShortName":"CPANSec","cveId":"CVE-2026-120640","datePublished":"2026-11-03T23:40:33.770Z","dateReserved":"2026-11-02T17:41:07.710Z","dateUpdated":"2026-11-03T23:40:33.770Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-11-04 00:17:25","lastModifiedDate":"2026-11-04 00:17:25","problem_types":["CWE-352","CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"120640","Ordinal":"1","Title":"CGI versions before 5.00 for Perl allow the POSTDATA, PUTDATA, P","CVE":"CVE-2026-120640","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"120640","Ordinal":"1","NoteData":"CGI versions before 5.00 for Perl allow the POSTDATA, PUTDATA, PATCHDATA and XForms:Model parameters to be set from the query string or form fields.\n\nCGI stores a non-form request body under POSTDATA, PUTDATA or PATCHDATA, and an XForms body under XForms:Model, but also accepts these names from the query string, a form field or a multipart part, so an application cannot tell a client-sent value from the real body.\n\nA cross-site HTML form can post POSTDATA={\"admin\":true} to an endpoint that reads JSON from param('POSTDATA'), a request forgery that needs no CORS preflight.","Type":"Description","Title":"CGI versions before 5.00 for Perl allow the POSTDATA, PUTDATA, P"}]}}}