CVE-2011-4320
Ejabberd DoS via malformed stanza
CVE-2011-4320 is a medium vulnerability (CVSS 4.0) in Process-one Ejabberd, published February 18, 2012. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.05%, the 81st percentile. Fixed in ejabberd 2.1.9.
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2011-4320- CVSS 2.0
- 4.0 Medium
AV:N/AC:L/Au:S/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2011-4320- Updated
- 2026-11-02
EUVDEUVD-2022-1988 No score
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.
- Record
EUVD-2022-1988- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2h3q-v47h-f4rc No score
Ejabberd DoS via malformed stanza
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.
- Record
GHSA-2h3q-v47h-f4rc- Weakness
- CWE-400
- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2011-4320- Updated
- 2026-11-02
OSVDEBIAN-CVE-2011-4320 No score
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.
- Record
DEBIAN-CVE-2011-4320- Updated
- 2026-11-02
OSVGHSA-2h3q-v47h-f4rc No score
Ejabberd DoS via malformed stanza
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.
- Record
GHSA-2h3q-v47h-f4rc- Weakness
- CWE-400
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
ejabberdHex |
through 2.1.8 | 2.1.9 |
ejabberdHex |
3.0.0-alpha-1 to 3.0.0-alpha-3 | 3.0.0-alpha-4 |
ejabberdDebian:12 |
before 2.1.9-1 | 2.1.9-1 |
ejabberdDebian:13 |
before 2.1.9-1 | 2.1.9-1 |
ejabberdDebian:14 |
before 2.1.9-1 | 2.1.9-1 |
ejabberdHex |
before 2.1.9 | 2.1.9 |
ejabberdHex |
3.0.0-alpha-1 up to 3.0.0-alpha-4 | 3.0.0-alpha-4 |
History
| When | Changed | Sources |
|---|---|---|
| 2026-11-03 | aliases | EUVD |
| 2026-11-02 | created | CVE List, GitHub Advisories, NVD, OSV |
References
secunia.com/advisories/46915
openwall.com/lists/oss-security/2011/11/19/1
osvdb.org/77302
support.process-one.net/browse/EJAB-1498
process-one.net/en/ejabberd/release_notes/release_note_ejabberd_2.1.9
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nvd.nist.gov/vuln/detail/CVE-2011-4320
github.com/processone/ejabberd/commit/d3c4eab46f3cd54f7686cfed740d9c130b6801cf
security-tracker.debian.org/tracker/CVE-2011-4320