CVE-2013-0339
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.
Exploit likelihood
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 Medium
AV: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 Medium
AV: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
| Package | Affected | Fixed |
|---|---|---|
libxml2Debian:12 |
before 2.8.0+dfsg1-7+nmu1 | 2.8.0+dfsg1-7+nmu1 |
libxml2Debian:13 |
before 2.8.0+dfsg1-7+nmu1 | 2.8.0+dfsg1-7+nmu1 |
libxml2Debian:14 |
before 2.8.0+dfsg1-7+nmu1 | 2.8.0+dfsg1-7+nmu1 |
libxml2Debian: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
| Recorded | Changed | Sources |
|---|---|---|
| affected, facts | ||
| aliases | EUVD | |
| first indexed | CVE 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
secunia.com/advisories/52662
lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html
openwall.com/lists/oss-security/2013/02/21/24
openwall.com/lists/oss-security/2013/02/22/3
seclists.org/oss-sec/2013/q4/188
seclists.org/oss-sec/2013/q4/184
Show 13 moreShow less
seclists.org/oss-sec/2013/q4/182
ubuntu.com/usn/USN-1904-2
ubuntu.com/usn/USN-1904-1
debian.org/security/2013/dsa-2652
bugzilla.redhat.com/show_bug.cgi?id=915149
secunia.com/advisories/54172
secunia.com/advisories/55568
git.gnome.org/browse/libxml2/commit?id=4629ee02ac649c27f9c0cf98ba017c6b5526070f
openwall.com/lists/oss-security/2013/04/12/6
nvd.nist.gov/vuln/detail/CVE-2013-0339
github.com/advisories/GHSA-4qgp-72gr-jfg9
docs.bell-sw.com/security/cves/CVE-2013-0339
security-tracker.debian.org/tracker/CVE-2013-0339