High 7.1Published Dec 15, 2015

CVE-2015-5312The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU cons…

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

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It affects canonical ubuntu_linux and 12 other products. Add what you run to find out whether that includes you.

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The xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.3 does not properly prevent entity expansion, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted XML data, a different vulnerability than CVE-2014-3660.

CVSS: 7.1 HIGH (v2.0, NVD)AV:N/AC:M/Au:N/C:N/I:N/A:C
Weakness (CWE): CWE-399
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

canonical ubuntu_linux canonical:ubuntu_linux	12.04; 14.04; 15.04; 15.10	NVD
redhat enterprise_linux_desktop redhat:enterprise_linux_desktop	6.0	NVD
redhat enterprise_linux_hpc_node redhat:enterprise_linux_hpc_node	6.0	NVD
redhat enterprise_linux_server redhat:enterprise_linux_server	6.0	NVD
redhat enterprise_linux_workstation redhat:enterprise_linux_workstation	6.0	NVD
apple iphone_os apple:iphone_os	through 9.2.1	NVD
apple mac_os_x apple:mac_os_x	through 10.11.3	NVD
apple tvos apple:tvos	through 9.1	NVD
apple watchos apple:watchos	through 2.1	NVD
xmlsoft libxml2 xmlsoft:libxml2	through 2.9.2	NVD
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References

References

http://lists.apple.com/archives/security-announce/2016/Mar/msg00000.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00001.html
http://lists.apple.com/archives/security-announce/2016/Mar/msg00002.html	third-party-advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html	mailing-list
http://lists.opensuse.org/opensuse-updates/2015-12/msg00120.html
http://lists.opensuse.org/opensuse-updates/2016-01/msg00031.html
http://marc.info/?l=bugtraq&m=145382616617563&w=2	third-party-advisory
http://rhn.redhat.com/errata/RHSA-2015-2549.html	third-party-advisory
http://rhn.redhat.com/errata/RHSA-2015-2550.html	third-party-advisory
http://rhn.redhat.com/errata/RHSA-2016-1089.html
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.