Is CVE-2011-1755 being actively exploited?

CVE-2011-1755 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1755?

CVE-2011-1755 has a CVSS 3.1 base score of 7.5 (HIGH).

CVE-2011-1755

HIGH · CVSS 7.5EPSS 3.7%EU EUVD

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.

Key facts

CVSS score: 7.5 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-776
EPSS score: 3.7% (90th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1754)
Published: June 21, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1754 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

apple / mac os x
apple / mac os x server
fedoraproject / fedora
fedoraproject / fedora
fedoraproject / fedora
jabberd2 / jabberd2

Certified products that may be affected

2 FIPS 140 or Common Criteria certified products, from automated matching by sec-certs.org.

Apple Mac OS X 10.6 - Apple Inc. - Common Criteria BSI-DSZ-CC-0536-2010 - archived
Apple Mac OS X v10.3.6 and Apple Mac OS X Server V10.3.6 - Apple Inc. - Common Criteria CCEVS-VR-0086-2005 - archived

References

http://codex.xiaoka.com/svn/jabberd2/tags/jabberd-2.2.14/ChangeLog(Broken Link)
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html(Mailing List)
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061341.html(Mailing List)
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061458.html(Mailing List)
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061482.html(Mailing List)
http://secunia.com/advisories/44787(Broken Link, Vendor Advisory)
http://secunia.com/advisories/44957(Broken Link)
http://secunia.com/advisories/45112(Broken Link)
http://support.apple.com/kb/HT5002(Third Party Advisory)
http://www.mail-archive.com/jabberd2%40lists.xiaoka.com/msg01655.html(Release Notes)
http://www.redhat.com/support/errata/RHSA-2011-0881.html(Broken Link)
http://www.redhat.com/support/errata/RHSA-2011-0882.html(Broken Link)
http://www.securityfocus.com/bid/48250(Broken Link, Third Party Advisory, VDB Entry)
https://bugzilla.redhat.com/show_bug.cgi?id=700390(Issue Tracking, Patch)
https://exchange.xforce.ibmcloud.com/vulnerabilities/67770(Third Party Advisory, VDB Entry)
https://hermes.opensuse.org/messages/9197650(Broken Link)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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