CVE-2011-1755

jabberd2 before 2.2.14 does not properly detect recursion during entity expansion, which allows...

7.5 HighFix available

jabberd2 before 2.2.14 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

3.66%Down 0.1 points since Feb 4, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2011-1755
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness: CWE-776
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-1755
Updated: 2026-11-02

EUVDEUVD-2011-1754 No score

Record: EUVD-2011-1754
Updated: 2026-11-03

GitHub AdvisoriesGHSA-rpcf-xw9j-7c7j 7.5

jabberd2 before 2.2.14 does not properly detect recursion during entity expansion, which allows...

Record: GHSA-rpcf-xw9j-7c7j
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-776
Updated: 2026-11-02

OSV 7.5

Record: CVE-2011-1755
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2011-1755 7.5

Record: DEBIAN-CVE-2011-1755
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`jabberd2` Debian:12	before 2.2.8-2.1	2.2.8-2.1
`jabberd2` Debian:13	before 2.2.8-2.1	2.2.8-2.1
`jabberd2` Debian:14	before 2.2.8-2.1	2.2.8-2.1
`jabberd` Red Hat:network_proxy:5.4::el5	before 0:2.2.8-12.el5sat	0:2.2.8-12.el5sat
`jabberd-debuginfo` Red Hat:network_proxy:5.4::el5	before 0:2.2.8-12.el5sat	0:2.2.8-12.el5sat
`jabberd` Red Hat:network_satellite:5.4::el5	before 0:2.2.8-12.el5sat	0:2.2.8-12.el5sat
`jabberd-debuginfo` Red Hat:network_satellite:5.4::el5	before 0:2.2.8-12.el5sat	0:2.2.8-12.el5sat

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1755 is a high vulnerability (CVSS 7.5) in Jabberd2, published June 21, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.66%, the 89th percentile. Fixed in jabberd2 2.2.8-2.1.

References

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