CVE-2013-0338

CVE-2013-0338 is a medium-severity vulnerability in Xmlsoft Libxml2 with a CVSS 2.0 base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

• Severity: Medium (CVSS 2.0 base score 4.3)
• EPSS exploit prediction: 3% (86th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-119
• Affected product: Xmlsoft Libxml2
• Published: 2013-04-25
• Last modified: 2026-06-16

Description

libxml2 2.9.0 and earlier allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, aka "internal entity expansion" with linear complexity.

Frequently asked questions

What is CVE-2013-0338?

libxml2 2.9.0 and earlier allows context-dependent attackers to cause a denial of service (CPU and memory consumption) via an XML file containing an entity declaration with long replacement text and many references to this entity, aka "internal entity expansion" with linear complexity.

How severe is CVE-2013-0338?

CVE-2013-0338 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2013-0338 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-0338?

CVE-2013-0338 primarily affects Xmlsoft Libxml2. In total, 134 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-0338?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2013-0338 published?

CVE-2013-0338 was published on 2013-04-25 and last updated on 2026-06-16.

References

• http://lists.opensuse.org/opensuse-security-announce/2013-11/msg00002.html
• http://lists.opensuse.org/opensuse-updates/2013-03/msg00112.html
• http://lists.opensuse.org/opensuse-updates/2013-03/msg00114.html
• http://marc.info/?l=bugtraq&m=142798889927587&w=2
• http://secunia.com/advisories/52662
• http://secunia.com/advisories/55568
• http://www.debian.org/security/2013/dsa-2652
• http://www.mandriva.com/security/advisories?name=MDVSA-2013:056
• http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
• http://www.ubuntu.com/usn/USN-1782-1
• https://bugzilla.redhat.com/show_bug.cgi?id=912400
• https://git.gnome.org/browse/libxml2/commit/?id=23f05e0c33987d6605387b300c4be5da2120a7ab

Affected products (134)

• cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.7.1:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.7.2:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.7.3:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.7.4:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.1:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.2:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.3:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.4:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.5:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.6:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.7:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.9:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.10:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.13:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.14:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:1.8.16:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.0:beta:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.1:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.2:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.4:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.5:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.6:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.7:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.8:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.9:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.10:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.2.11:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.3.1:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.3.3:*:*:*:*:*:*:*
• cpe:2.3:a:xmlsoft:libxml2:2.3.4:*:*:*:*:*:*:*

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