CVE-2026-91829
High
Description
The Subscribe to Comments WordPress plugin before 2.3.3 does not properly validate a parameter before reflecting it into a link target, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting via a crafted URL against anyone who clicks it, including administrators.
SeverityHigh
CVSS7.1
Exploit probability—
ProductSubscribe to Comments
PublishedOct 11, 2026
First seenOct 11, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Subscribe to Comments2.3.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Subscribe to Comments | v < 2.3.3 | 2.3.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.