CVE-2016-1858

WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and tvOS before 9.2.1, improperly...

6.5 MediumFix available

WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and tvOS before 9.2.1, improperly tracks taint attributes, which allows remote attackers to obtain sensitive information via a crafted web site.

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: None
Availability: None

Exploit likelihood

2.17%Up 0.4 points since Feb 4, 2022

What each source reports

NVD Score used 6.5

Record: CVE-2016-1858
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS 2.0: 4.3 MediumAV:N/AC:M/Au:N/C:P/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE List No score

Record: CVE-2016-1858
Updated: 2026-11-02

EUVDEUVD-2016-2953 No score

Record: EUVD-2016-2953
Updated: 2026-11-03

GitHub AdvisoriesGHSA-r2c6-xm5m-7vg5 6.5

WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and tvOS before 9.2.1, improperly...

Record: GHSA-r2c6-xm5m-7vg5
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSVUBUNTU-CVE-2016-1858 6.5

Record: UBUNTU-CVE-2016-1858
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Updated: 2026-11-02

OSVMGASA-2016-0294 No score

Updated webkit2 packages fix security vulnerability

The webkit2 package has been updated to version 2.12.4, fixing several security issues and other bugs.

Record: MGASA-2016-0294
Updated: 2026-11-02

OSVUSN-3079-1 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-3079-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`webkit2` Mageia:5	before 2.12.4-1.mga5	2.12.4-1.mga5
`webkit2gtk` Ubuntu:16.04:LTS	before 2.12.5-0ubuntu0.16.04.1, plus listed versions 2.8.5+dfsg1-32.10.3+dfsg1-12.10.4+dfsg1-12.10.5-12.10.6-12.10.6-1ubuntu12.10.8-1ubuntu12.10.9-1ubuntu1	2.12.5-0ubuntu0.16.04.1
`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

History

History
Recorded	Changed	Sources
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-2016-1858 is a medium vulnerability (CVSS 6.5) in Apple Safari, published May 20, 2016. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.17%, the 82nd percentile. Fixed in webkit2 2.12.4-1.mga5.

References

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