CVE-2026-91829highCWE-79

CVE-2026-91829: high-severity vulnerability in Subscribe to Comments

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

Published

Follow this CVE+ Monitor Subscribe to Comments

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

41Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 7.1epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Affected products
Unknown · Subscribe to Comments
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — Subscribe to Comments

In the same product, most dangerous first.

CVE-2026-91830MEDIUMSubscribe to Comments < 2.3.3 - Unauthenticated Subscription Management Key Disclosure via Forged Comment CookieEPSS 0.2%CVE-2026-91831LOWSubscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name SettingEPSS 0.2%