CVE-2026-91829

Subscribe to Comments < 2.3.3 - Reflected XSS via 'ref' Parameter

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.

Affected

Subscribe to Comments

CVSS v3.1 CNA

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

EPSS

0.16% chance of exploitation in the next 30 days, 5th percentile

Published

2026-10-11

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/1ed0314d-9871-4914-bb9c-ff894ea4c400/

References

• CVE Record
• NVD entry