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CVE-2013-0339

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application...

6.8 MediumFix available

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Exploit likelihood

3.61%Up 0.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 6.8

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
CVE-2013-0339
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness
CWE-264
Updated
2026-11-02
CVE List No score

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
CVE-2013-0339
Updated
2026-11-02
EUVDEUVD-2013-0351 No score

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
EUVD-2013-0351
Updated
2026-11-03
GitHub AdvisoriesGHSA-4qgp-72gr-jfg9 No score

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application...

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
GHSA-4qgp-72gr-jfg9
Updated
2026-11-02
OSVBELL-CVE-2013-0339 6.8

CVE-2013-0339 does not affect BellSoft software

Record
BELL-CVE-2013-0339
CVSS 2.0
6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Updated
2026-11-02
OSV No score

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
CVE-2013-0339
Updated
2026-11-02
OSVDEBIAN-CVE-2013-0339 No score

libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE.

Record
DEBIAN-CVE-2013-0339
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
libxml2
Debian:12
before 2.8.0+dfsg1-7+nmu1
2.8.0+dfsg1-7+nmu1
libxml2
Debian:13
before 2.8.0+dfsg1-7+nmu1
2.8.0+dfsg1-7+nmu1
libxml2
Debian:14
before 2.8.0+dfsg1-7+nmu1
2.8.0+dfsg1-7+nmu1
libxml2
Debian:6.0
From an advisory covering 2 CVEs
before 2.7.8.dfsg-2+squeeze7, plus listed versions
2.7.8.dfsg-22.7.8.dfsg-2+squeeze12.7.8.dfsg-2+squeeze22.7.8.dfsg-2+squeeze32.7.8.dfsg-2+squeeze42.7.8.dfsg-2+squeeze52.7.8.dfsg-2+squeeze6
2.7.8.dfsg-2+squeeze7

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2013-0339 is a medium vulnerability (CVSS 6.8) in Xmlsoft Libxml2, published March 24, 2013. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.61%, the 89th percentile. Fixed in libxml2 2.8.0+dfsg1-7+nmu1.

References

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