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CVE-2016-5134

27
FAUCET Score

CVE-2016-5134 describes a vulnerability in the Proxy Auto-Config (PAC) feature of Google Chrome prior to version 52.0.2743.82. This flaw allows remote attackers to discover user credentials by operating a malicious PAC server that can extract sensitive URL information beyond the intended scheme, host, and port. With a CVSS score of 8.8 (HIGH), this vulnerability is easily exploitable over the network with low attack complexity, requiring user interaction, and could lead to high confidentiality, integrity, and availability impacts. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered significant community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 51.0.2704.106CPE matchmatch criteria
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.52%
Probability of exploitation in next 30 days
EPSS Percentile
72.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0152 is in the 71st percentile among its peer group of 14,855 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6 SupplementaryFixed in: chromium-browser-0:52.0.2743.82-1.el6
View patch

Vendor Advisories (1)

redhatCVE-2016-5134Moderate

chromium-browser: url leakage via pac script

Jul 20, 2016

References

googlechromereleases.blogspot.com / 2016/07/stable-channel-update.html
lists.opensuse.org / opensuse-security-announce/2016-07/msg00020.html
lists.opensuse.org / opensuse-security-announce/2016-07/msg00021.html
lists.opensuse.org / opensuse-security-announce/2016-07/msg00022.html
lists.opensuse.org / opensuse-security-announce/2016-07/msg00028.html
rhn.redhat.com / errata/RHSA-2016-1485.html
codereview.chromium.org / 1996773002
crbug.com / 593759
security.gentoo.org / glsa/201610-09
kb.cert.org / vuls/id/877625
debian.org / security/2016/dsa-3637
securityfocus.com / bid/92053
securitytracker.com / id/1036428
ubuntu.com / usn/USN-3041-1