CVE-2026-120640None▾ SunlitCGI 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. CGI stores a non-form request body under POSTDATA, PUTDATA or PATCHDATA, and an XForms …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.1%
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.
CGI 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.
A 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.
CGI < 5.00Upgrade to CGI 5.00 or later.
For deployments that cannot upgrade, check the request Content-Type before trusting param('POSTDATA').
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-120650NoneCGI versions before 5.00 for Perl allow memory, CPU and disk exhaustion via missing or unenforced request size, parameter and upload limits
CVE-2026-120641NoneCGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths
CVE-2026-120639NoneCGI versions before 5.00 for Perl allow HTTP header injection via entity decoding after the newline check in header and unchecked values in multipart_start and do_push
CVE-2026-120648NoneCGI versions before 5.00 for Perl allow HTML injection via text containing --> in comment
CVE-2026-120642NoneCGI versions before 5.00 for Perl return request-derived values untainted under taint mode
CVE-2026-120651NoneCGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set