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CVE-2016-9866

24
FAUCET Score

CVE-2016-9866 describes a critical Cross-Site Request Forgery (CSRF) vulnerability in phpMyAdmin versions 4.6.x (prior to 4.6.5), 4.4.x (prior to 4.4.15.9), and 4.0.x (prior to 4.0.10.18). This flaw occurs when the arg_separator is not its default value, preventing the CSRF token from being properly removed from the preference import action's return URL. With a CVSS score of 9.8 (CRITICAL), this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.6.0CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.6.0:*:*:*:*:*:*:*
4.6.1CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.6.1:*:*:*:*:*:*:*
4.6.2CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.6.2:*:*:*:*:*:*:*
4.6.3CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.6.3:*:*:*:*:*:*:*
4.6.4CPE matchmatch criteria
cpe:2.3:a:phpmyadmin:phpmyadmin:4.6.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.02%
Probability of exploitation in next 30 days
EPSS Percentile
59.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0102 is in the 45th percentile among its peer group of 36,862 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (3)

composerpatch availablevia ghsa
Product: phpmyadmin/phpmyadminFixed in: 4.6.5
composerpatch availablevia ghsa
Product: phpmyadmin/phpmyadminFixed in: 4.4.15.9
composerpatch availablevia ghsa
Product: phpmyadmin/phpmyadminFixed in: 4.0.10.18

Vendor Advisories (1)

composerGHSA-jvxx-8xxf-5495critical

phpMyAdmin CSRF Vulnerability

May 17, 2022

References

security.gentoo.org / glsa/201701-32
phpmyadmin.net / security/PMASA-2016-71
PatchVendor Advisory
securityfocus.com / bid/94536