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CVE-2023-3158

19
FAUCET Score

CVE-2023-3158 is a Stored Cross-Site Scripting (XSS) vulnerability affecting the Mail Control plugin for WordPress, versions up to and including 0.2.8. This flaw allows unauthenticated attackers to inject malicious web scripts through email subjects due to insufficient input sanitization and output escaping. With a CVSS score of 6.1 (Medium), the vulnerability has a network attack vector and low attack complexity, potentially leading to limited data compromise and integrity impact when a user accesses an affected page. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.2.8CPE matchmatch criteria
cpe:2.3:a:instareza:mail_control:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.60%
Probability of exploitation in next 30 days
EPSS Percentile
45.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0060 is in the 48th 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

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

plugins.trac.wordpress.org / browser/mail-control/trunk/includes/admin.php
Patch
plugins.trac.wordpress.org / changeset
wordfence.com / threat-intel/vulnerabilities/id/77537eb8-1c84-4702-aba1-727b0de1c3e1
Third Party Advisory