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CVE-2023-6000

32
FAUCET Score

CVE-2023-6000 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Popup Builder WordPress plugin prior to version 4.2.3, allowing unauthenticated attackers to inject malicious JavaScript into existing popups. This medium-severity flaw (CVSS 6.1) has a low attack complexity and can lead to client-side compromise. The vulnerability is actively exploited in the wild, with reports of it being used to infect thousands of WordPress sites with malware, and public Nuclei templates are available for detection.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.2.3CPE matchmatch criteria
cpe:2.3:a:sygnoos:popup_builder:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
2.00%
Probability of exploitation in next 30 days
EPSS Percentile
78.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Nuclei: CVE-2023-6000 · Sep 9, 2025
This CVE's current EPSS score of 0.0200 is in the 89th percentile among its peer group of 26,219 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

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

wpscan.com / blog/stored-xss-fixed-in-popup-builder-4-2-3
ExploitThird Party Advisory
wpscan.com / vulnerability/cdb3a8bd-4ee0-4ce0-9029-0490273bcfc8
ExploitThird Party Advisory