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CVE-2023-1166

15
FAUCET Score

CVE-2023-1166 describes a Stored Cross-Site Scripting (XSS) vulnerability in the USM-Premium WordPress plugin prior to version 16.3. This flaw allows high-privilege users, such as administrators, to inject malicious scripts due to improper sanitization of plugin settings, even in environments where unfiltered_html is restricted. The vulnerability has a CVSS score of 4.8 (Medium), indicating a network-based attack with low complexity but requiring high privileges and user interaction, potentially leading to limited confidentiality and integrity impacts. Currently, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 16.3CPE matchmatch criteria
cpe:2.3:a:ultimatelysocial:usm_premium:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

4.8MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.7
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 58th percentile among its peer group of 4,931 CVEs.

Social Chatter

No social media mentions found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

wpscan.com / vulnerability/825eccf9-f351-4a5b-b238-9969141b94fa
ExploitThird Party Advisory