CVE-2023-45829

FAUCET Score

CVE-2023-45829 is a stored Cross-Site Scripting (XSS) vulnerability affecting versions up to and including 2.0.1 of the HappyBox Newsletter & Bulk Email Sender WordPress plugin. This medium-severity vulnerability (CVSS 5.4) allows authenticated contributors to inject malicious scripts, potentially leading to limited impact on confidentiality and integrity. While no active exploitation, public exploit code, or significant community discussion has been observed, the vulnerability remains a risk for unpatched installations.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		<= 2.0.1CPE matchmatch criteria	cpe:2.3:a:happybox:newsletter_\&_bulk_email_sender::::::wordpress::*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

Exploitability Score

2.3

Impact Score

3.7

CvssVersion

3.1

Exploit Intelligence

EPSS Score

0.40%

Probability of exploitation in next 30 days

EPSS Percentile

32.7%

Percentile rank of EPSS score among Peer Group

As of 2026-07-26

Model: v2026.06.15

This CVE's current EPSS score of 0.0040 is in the 49th percentile among its peer group of 15,224 CVEs.

Social Chatter

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

patchstack.com / database/vulnerability/newsletter-bulk-email/wordpress-newsletter-bulk-email-sender-plugin-2-0-1-cross-site-scripting-xss-vulnerability

Third Party Advisory