CVE Watch4 nov 2026

CVE-2026-120635

CGI versions before 5.00 for Perl allow form fields to be smuggled past proxies and WAFs via multipart parsing that differs from the RFCs.

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

0-100

Publicado: 4 nov 2026 · Última mod.: 4 nov 2026 · CWE-436

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

CGI versions before 5.00 for Perl allow form fields to be smuggled past proxies and WAFs via multipart parsing that differs from the RFCs. The multipart/form-data parser matches the boundary anywhere rather than at the start of a line, uses the boundary without its leading -- for some client-supplied User-Agent values, finds the Content-Disposition name and filename inside the quoted values of other parameters, and corrupts parts when the boundary nears the 4096-byte read size.

Referencias oficiales

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