What’s Vulnerable › Vulnerabilities
CVE-2026-91830: Subscribe to Comments < 2.3.3 - Unauthenticated Subscription Management Key Disclosure via Forged Comment Cookie
- Severity: medium (CVSS 6.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-10-16 · updated 2026-10-16
- Weakness: CWE-200
Description
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.
Affected products
- Subscribe to Comments: before 2.3.3 — fixed in 2.3.3
How to fix
Upgrade to a fixed version: Subscribe to Comments 2.3.3. Check the vendor advisory for mitigations.
References
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