CVE-2011-4320 json
Ejabberd DoS via malformed stanza
published 2012-02-18 14 y ago modified 2026-06-16 4 mo ago also GHSA-2h3q-v47h-f4rc , EUVD-2022-1988
- cvss
- 4.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
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 node attribute.
Patch / fix
- hex ejabberd 2.1.9, 3.0.0-alpha-4
- ejabberd Debian 14, Debian 13, Debian 12 2.1.9-1
debian advisories DEBIAN-CVE-2011-4320
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2011-4320 updated cvss 4.0
(mod_pubsub): DoS (infinite loop, excessive CPU consumption) by processing malformed <publish> stanza
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
2.05% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| hex | ejabberd | <2.1.9 >=3.0.0-alpha-1, <3.0.0-alpha-4 |
2.1.9 3.0.0-alpha-4 |
Classification
References
-
support.process-one.net
/browse/EJAB-1498
web, patch
-
github.com
/processone/ejabberd/commit/d3c4eab46f3cd54f7686cfed740d9c130b6801cf
web
-
github.com
/processone/ejabberd/commit/d5b4d6785879f0a5192c26f5b5e218aec8104798
web
-
secunia.com
/advisories/46915
third-party-advisory, vendor-advisory
-
openwall.com
/lists/oss-security/2011/11/19/1
mailing-list, web
-
osvdb.org
/77302
vdb-entry
-
openwall.com
/lists/oss-security/2011/11/19/2
mailing-list, web
-
process-one.net
/en/ejabberd/release_notes/release_note_ejabberd_2.1.9
web
-
nvd.nist.gov
/vuln/detail/CVE-2011-4320
advisory
-
github.com
/processone/ejabberd
package
Sources
- CVE List CVE-2011-4320
- GitHub Advisory GHSA-2h3q-v47h-f4rc
- NVD CVE-2011-4320
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.