CVE-2026-66706 MEDIUM

CVE-2026-66706: WordPress Subscribe to Comments plugin <= 2.3.1 - Cross Site Scripting (XSS) vulnerability

Vendor Mark Jaquith

Product Subscribe to Comments

Weakness CWE-79 · XSS

Published August 6, 2026

Last update August 6, 2026

View on NVD All CVEs

CVSS base score

5.9/10

Attack vector Network

Attack complexity Low

Privileges required High

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Author Cross Site Scripting (XSS) in Subscribe to Comments <= 2.3.1 versions.

Explanation of Vulnerability in Simple Terms

02Summary

Subscribe to Comments versions 2.3.1 and earlier contain a cross-site scripting (XSS) vulnerability. An authenticated administrator with high privileges can inject malicious scripts that execute in other users' browsers when they interact with the plugin. The vulnerability requires user interaction and affects the integrity and confidentiality of site data.

What an attacker can do

03Attacker Capabilities

Inject malicious scripts that run in other users' browsers when they visit affected pages.

Potential impact on your site

04Site Impact

Administrators with high privileges could be tricked into executing malicious scripts affecting site security and user data.

Conditions required to exploit

05Prerequisites

Attacker must have high-level admin privileges and the victim must visit a page containing the injected script.

Key dates

06Disclosure timeline

August 6, 2026 CVE published

August 6, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-66706 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

Identifiers

CVE CVE-2026-66706

CWE CWE-79

CVSS 5.9 / MEDIUM

Affected versions