CVE-2026-110682

Name	CVE-2026-110682
Description	Cpanel::JSON::XS versions from 4.42 before 4.80 for Perl let input chunking change the decoded value of top-level numbers in incr_parse. allow_nonref is enabled by default and incr_parse inherits it. A top-level number, true, false or null has no closing delimiter, so the incremental parser decodes whatever has arrived. The bytes 12 decode as one value when read together, but as 1 and then 2 when split across two reads. A peer that can influence read boundaries can change how many messages a stream consumer decodes and what values they carry.
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
libcpanel-json-xs-perl (PTS)	bookworm, bookworm (security)	4.35-1+deb12u1	vulnerable
	trixie (security), trixie	4.39-2~deb13u1	vulnerable
	forky, sid	4.80-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libcpanel-json-xs-perl	source	(unstable)	4.80-1

Notes

https://lists.security.metacpan.org/cve-announce/msg/44479866/
Fixed by: https://github.com/rurban/Cpanel-JSON-XS/commit/f632d6690d82c14cd2d76d648805325201c52b83 (4.80)