CVE WatchOct 24, 2026

CVE-2026-114629

Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters. Web::Dispat

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

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0-100

Published: Oct 24, 2026 · Last modified: Oct 24, 2026 · CWE-789

EPSS · 30d

Not enough EPSS history yet.

Technical description

Web::Simple versions before 0.035 for Perl allocate a buffer sized by the Content-Length header for urlencoded body parameters. Web::Dispatch::ParamParser::get_unpacked_body_from reads an application/x-www-form-urlencoded body using a single read call, with no cap and the return value ignored. Perl's read grows the buffer to the requested length before reading, so the declared Content-Length determines the allocation. An attacker can trigger this through any route whose dispatch specification has a % body-parameter match, such as sub (POST + %name=), sending a Content-Length far larger than the body actually sent. No authentication is involved.

Official references

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