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CVE-2016-1564

23
FAUCET Score

CVE-2016-1564 describes multiple cross-site scripting (XSS) vulnerabilities in WordPress versions prior to 4.4.1, specifically within the wp-includes/class-wp-theme.php component. Attackers can inject arbitrary web script or HTML by manipulating stylesheet or template names when accessing wp-admin/customize.php. This vulnerability has a CVSS v3 score of 6.1 (MEDIUM), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and potentially leading to limited impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.4.0CPE matchmatch criteria
cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.69%
Probability of exploitation in next 30 days
EPSS Percentile
84.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0269 is in the 93rd percentile among its peer group of 26,220 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

codex.wordpress.org / Version_4.4.1
PatchVendor Advisory
core.trac.wordpress.org / changeset/36185
wordpress.org / news/2016/01/wordpress-4-4-1-security-and-maintenance-release
PatchVendor Advisory
wpvulndb.com / vulnerabilities/8358
twitter.com / brutelogic/statuses/685105483397619713
Exploit
debian.org / security/2016/dsa-3444
openwall.com / lists/oss-security/2016/01/08/4
securitytracker.com / id/1034622