CVE-2011-4320: Process-One Ejabberd

Medium severity, CVSS 4.0. EPSS: 2% chance of exploitation in the next 30 days.

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 node attribute.

Affected products

• Process-One Ejabberd: version 2.1.8 only; version 3.0.0 only

Published 2012-02-18. Last modified 2026-06-16.