{"action":"Upgrade ejabberd to 2.1.9-1 or later.","affected":[{"fixed":"2.1.9-1","introduced":"0"}],"component":"ejabberd","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["2.1.9-1"],"id":"tcs_01M5N9WWG2XFKEYCD1S0W9YHGQ","modified_at":"2026-10-23T17:47:42.036744712Z","published_at":"2012-02-18T00:55:02.150Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2011-4320","https://security-tracker.debian.org/tracker/CVE-2011-4320"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2011-4320","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2011-4320"}],"summary":"The mod_pubsub module (mod_pubsub.erl) in ejabberd 2.1.8 and 3.0.0-alpha-3 allows remote authenticated users to cause a denial of service (infinite loop) via a stanza with a publish tag that lacks a n"}