What is CVE-2026-91829?

CVE-2026-91829 is a high-severity vulnerability in Subscribe To Comments, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-10-11.

How severe is CVE-2026-91829?

High severity. CVSS v3 base score is 7.1 out of 10.

XSS in Subscribe To Comments

CVE-2026-91829

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-11 · last modified 2026-10-11.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Subscribe To Comments

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

wpscan.com/vulnerability/1ed0314d-9871-4914-bb9c-ff894ea4c400/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-91829?: CVE-2026-91829 is a high-severity vulnerability in Subscribe To Comments, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2026-10-11.
How severe is CVE-2026-91829?: High severity. CVSS v3 base score is 7.1 out of 10.