What is CVE-2026-91830?

CVE-2026-91830 is a medium-severity vulnerability in Subscribe To Comments, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-10-16.

How severe is CVE-2026-91830?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Subscribe To Comments

CVE-2026-91830

The Subscribe to Comments WordPress plugin before 2.3.3 does not sign or validate a cookie it trusts to identify a commenter, allowing unauthenticated attackers to disclose a subscriber's management key and silently alter that subscriber's subscriptions.

Vulnerability class: Information Disclosure

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

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-200 — Information Disclosure

References

wpscan.com/vulnerability/b2b1638a-f8af-49f7-86a6-a3eeea0526b1/ (technical-description, exploit, vdb-entry)

Frequently asked questions

What is CVE-2026-91830?: CVE-2026-91830 is a medium-severity vulnerability in Subscribe To Comments, classified under Information Disclosure. CVSS score: 6.5/10. Published 2026-10-16.
How severe is CVE-2026-91830?: Medium severity. CVSS v3 base score is 6.5 out of 10.