USN-8984-1: jabberd2 vulnerability
Publication date
3 November 2026
Overview
jabberd2 could allow unintended access to network services.
Releases
Packages
- jabberd2 - Jabber instant messenger server
Details
It was discovered that jabberd2 allowed SASL ANONYMOUS authentication even
when it was not enabled in the configuration. A remote attacker could
possibly use this issue to bypass authentication.
It was discovered that jabberd2 allowed SASL ANONYMOUS authentication even
when it was not enabled in the configuration. A remote attacker could
possibly use this issue to bypass authentication.
Update instructions
After a standard system update you need to restart jabberd2 to make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 16.04 LTS xenial | jabberd2 – 2.3.4-1ubuntu2+esm1 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.