CVE-2026-114629

Name	CVE-2026-114629
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1151935

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libweb-simple-perl (PTS)	bookworm, trixie	0.033-2	vulnerable
	forky	0.036-1	fixed
	sid	0.037-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libweb-simple-perl	source	(unstable)	0.035-1			1151935

Notes

[trixie] - libweb-simple-perl <no-dsa> (Minor issue)
https://lists.security.metacpan.org/cve-announce/msg/44599125/
Fixed by: https://github.com/p5sagit/Web-Simple/commit/7e02c4f6204a2898938d357e6efe6dc2679af695 (v0.035)