CVE-2016-4761

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

8.8 HighFix available

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.39%Up 0.3 points since Feb 4, 2022

What each source reports

NVD Score used 8.8

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Record: CVE-2016-4761
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0: 6.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:P
Weakness: CWE-416
Updated: 2026-11-02

CVE List No score

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Record: CVE-2016-4761
Updated: 2026-11-02

EUVDEUVD-2016-5746 No score

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Record: EUVD-2016-5746
Updated: 2026-11-03

GitHub AdvisoriesGHSA-342r-hgrw-rv65 No score

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Record: GHSA-342r-hgrw-rv65
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-4761 8.8

WebKitGTK+ before 2.14.0: A use-after-free vulnerability can allow remote attackers to cause a DoS

Record: UBUNTU-CVE-2016-4761
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVMGASA-2017-0069 No score

Updated webkit2 packages fix security vulnerabilities

The webkit2 package has been updated to version 2.14.5, fixing several security issues and other bugs.

Record: MGASA-2017-0069
Updated: 2026-11-02

OSVUSN-3166-1 No score

webkit2gtk vulnerabilities

A large number of security issues were discovered in the WebKitGTK+ Web and JavaScript engines. If a user were tricked into viewing a malicious website, a remote attacker could exploit a variety of issues related to web browser security, including cross-site scripting attacks, denial of service attacks, and arbitrary code execution.

Record: USN-3166-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`webkit2` Mageia:5 From an advisory covering 60 CVEs	before 2.14.5-1.mga5	2.14.5-1.mga5
`webkit2gtk` Ubuntu:16.04:LTS	before 2.14.2-0ubuntu0.16.04.1, plus listed versions 2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-1 Show 4 moreShow less 2.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu12.12.5-0ubuntu0.16.04.1	2.14.2-0ubuntu0.16.04.1
`qtwebkit-opensource-src` Ubuntu:16.04:LTS	All versions, plus listed versions 5.4.2+dfsg-1ubuntu2.15.5.1+dfsg-2ubuntu1	None known
`qtwebkit-source` Ubuntu:16.04:LTS	All versions, plus listed versions 2.3.2-0ubuntu102.3.2-0ubuntu11	None known
`webkitgtk` Ubuntu:16.04:LTS	All versions, plus listed versions 2.4.9-2ubuntu22.4.10-0ubuntu12.4.11-0ubuntu0.1	None known
`webkit2gtk` Ubuntu:16.04:LTS From an advisory covering 18 CVEs	before 2.14.2-0ubuntu0.16.04.1, plus listed versions 2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-1 Show 4 moreShow less 2.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu12.12.5-0ubuntu0.16.04.1	2.14.2-0ubuntu0.16.04.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2016-4761 is a high vulnerability (CVSS 8.8) in Webkitgtk+, published December 1, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.39%, the 72nd percentile. Fixed in webkit2gtk 2.14.2-0ubuntu0.16.04.1.

References

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