Medium 5.5Published May 20, 2016

CVE-2016-1837Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS…

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

Does this affect you?

It affects canonical ubuntu_linux and 13 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for canonical ubuntu_linux Exploited in the last 30 days

Multiple use-after-free vulnerabilities in the (1) htmlPArsePubidLiteral and (2) htmlParseSystemiteral functions in libxml2 before 2.9.4, as used in Apple iOS before 9.3.2, OS X before 10.11.5, tvOS before 9.2.1, and watchOS before 2.2.1, allow remote attackers to cause a denial of service via a crafted XML document.

CVSS: 5.5 MEDIUM (v3.0, NVD)CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-416
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; 15.10; 16.04	NVD
debian debian_linux debian:debian_linux	8.0	NVD
apple iphone_os apple:iphone_os	before 9.3.2	NVD
apple mac_os_x apple:mac_os_x	before 10.11.5	NVD
apple tvos apple:tvos	before 9.2.1	NVD
apple watchos apple:watchos	before 2.2.1	NVD
redhat enterprise_linux_desktop redhat:enterprise_linux_desktop	6.0; 7.0	NVD
redhat enterprise_linux_server redhat:enterprise_linux_server	6.0; 7.0	NVD
redhat enterprise_linux_server_aus redhat:enterprise_linux_server_aus	7.2; 7.3; 7.4; 7.6	NVD
redhat enterprise_linux_server_eus redhat:enterprise_linux_server_eus	7.2; 7.3; 7.4; 7.5; 7.6	NVD
1–10 of 14

References

References

http://lists.apple.com/archives/security-announce/2016/May/msg00001.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00002.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00003.html	mailing-list, vendor-advisory
http://lists.apple.com/archives/security-announce/2016/May/msg00004.html	mailing-list, vendor-advisory
http://rhn.redhat.com/errata/RHSA-2016-2957.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html	third-party-advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html	third-party-advisory
http://www.securityfocus.com/bid/90691	third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1035890	third-party-advisory, vdb-entry
1–10 of 22

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.