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CVE-2013-0339

19
FAUCET Score

CVE-2013-0339 describes an XML External Entity (XXE) vulnerability in libxml2 versions up to 2.9.1, affecting products like Canonical, Debian, and SUSE. This flaw allows remote attackers to trigger denial of service, send HTTP requests to internal networks, or read arbitrary files through crafted XML documents, unless developers explicitly disable external entity expansion. With a CVSS score of 6.8, it has a network attack vector, medium attack complexity, and potential for partial confidentiality, integrity, and availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.9.1CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
1.7.0CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:1.7.0:*:*:*:*:*:*:*
1.7.1CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:1.7.1:*:*:*:*:*:*:*
1.7.2CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:1.7.2:*:*:*:*:*:*:*
1.7.3CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:1.7.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.61%
Probability of exploitation in next 30 days
EPSS Percentile
88.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0361 is in the 84th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (3)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: mingw32-libxml2

Vendor Advisories (1)

redhatCVE-2013-0339Moderate

libxml2: CPU consumption DoS and other effects when performing string substitutions during external entities expansion

Feb 19, 2013

References

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
bugzilla.redhat.com / show_bug.cgi
seclists.org / oss-sec/2013/q4/182
seclists.org / oss-sec/2013/q4/184
seclists.org / oss-sec/2013/q4/188
secunia.com / advisories/52662
Vendor Advisory
secunia.com / advisories/54172
secunia.com / advisories/55568
Vendor Advisory
git.gnome.org / browse/libxml2/commit
ExploitPatch
debian.org / security/2013/dsa-2652
openwall.com / lists/oss-security/2013/04/12/6
ubuntu.com / usn/USN-1904-1
ubuntu.com / usn/USN-1904-2