CVE-2026-116013

Name	CVE-2026-116013
Description	OpenResty lua-resty-dns before 0.24 contains an improper input validation vulnerability in parse_section() and _decode_name() that fails to check resource record lengths against the received message. Attackers controlling or spoofing a queried nameserver can send truncated record headers or RDATA, raising uncaught Lua exceptions in resolver:query() that abort requests and break name resolution.
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
lua-nginx-dns (PTS)	forky, bookworm, sid, trixie	0.20-1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
lua-nginx-dns	source	(unstable)	(unfixed)

https://github.com/openresty/lua-resty-dns/pull/83
https://github.com/openresty/lua-resty-dns/commit/b68eaecbf7997ac71c08ba56032b1f45438bd758 (v0.24)