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Fencer Intel
medium 5.4

CVE-2016-4590 json

WebKit in Apple iOS before 9.3.3 and Safari before 9.1.2 mishandles about: URLs, which allows remote attackers to bypass the Same Origin Po…

published 2016-07-22 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5576

cvss
5.4
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

WebKit in Apple iOS before 9.3.3 and Safari before 9.1.2 mishandles about: URLs, which allows remote attackers to bypass the Same Origin Policy via a crafted web site.

Patch / fix

  • webkit2gtk Debian 14, Debian 13, Debian 12 2.12.4-1

debian advisories DEBIAN-CVE-2016-4590

  • webkit2gtk Ubuntu 16.04 LTS 2.12.5-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2016-4590

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gtk3 openSUSE Tumbleweed 2.14.2-2.1

opensuse advisories openSUSE-SU-2024:10572-1

  • webkit2gtk Alpine 3.4 2.12.5-r0

alpine advisories ALPINE-CVE-2016-4590

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Exploit prediction

1.46% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 5.4 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.