Servers and applications
CVE-2013-0339
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:…
- Severity
- Medium 6.8
- Published
- 21 Jan 2014
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 3.6% in the next 30 daysHigher than 89% of CVEs. EPSS by FIRST, 12 Nov 2026
- Weakness
- CWE-264
- Attack
- Over the network · No login needed
- Attacker can
- Read some data · Change some data · Slow it down
- CVSS vector
AV:N/AC:M/Au:N/C:P/I:P/A:P- Sources
- NVD
Description
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.
Affected software
| Software | Affected versions |
|---|---|
libxml2Servers and applications · cpe:a:xmlsoft:libxml2 |
All 128 release lines
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