CVE-2026-35201

Name	CVE-2026-35201
Description	Discount is an implementation of John Gruber's Markdown markup language in C. From 1.3.1.1 to before 2.2.7.4, a signed length truncation bug causes an out-of-bounds read in the default Markdown parse path. Inputs larger than INT_MAX are truncated to a signed int before entering the native parser, allowing the parser to read past the end of the supplied buffer and crash the process. This vulnerability is fixed in 2.2.7.4.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
discount (PTS)	bullseye	2.2.6-1	vulnerable
	bookworm	2.2.7-2	vulnerable
	forky, sid, trixie	2.2.7-2.1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
discount	source	(unstable)	(unfixed)

Notes

[trixie] - discount <no-dsa> (Minor issue)
[bookworm] - discount <no-dsa> (Minor issue)
https://github.com/davidfstr/rdiscount/security/advisories/GHSA-6r34-94wq-jhrc
https://github.com/davidfstr/rdiscount/commit/b1a16445e92e0d12c07594dedcdc56f80b317761 (2.2.7.4)