CVE-2011-4320: n/a vulnerability

CVE-2011-4320: The mod_pubsub module (mod_pubsub.erl) in ejabberd 2.1.8 and 3.0.0-alpha-3 allows remote authenticated user...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 00:01 UTC (UTC+00:00)

Security readout for executives and security teams

This vulnerability affects old ejabberd XMPP servers using mod_pubsub. An authenticated remote user could send malformed publish data and cause the service to hang in an infinite loop, creating a denial of service. The public bundle does not show active exploitation or a CVSS score. Exposure is most likely where ejabberd 2.1.8 or 3.0.0-alpha-3 is still running with mod_pubsub enabled. Risk is higher for public XMPP services, environments with many user accounts, or systems allowing easy account creation. Prioritize remediation for any internet-facing or broadly accessible ejabberd service. Business impact is service disruption, not data theft based on available sources. Legacy software age increases operational risk if still present. Mitigation focus: Identify any ejabberd 2.1.8 or 3.0.0-alpha-3 deployments.; Review ProcessOne ejabberd 2.1.9 guidance and upgrade if affected.; Check whether mod_pubsub is enabled and needed..

Prepared: Jun 27, 2026, 17:28 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Feb 18, 2012, 00:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://support.process-one.net/browse/EJAB-1498CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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