CVE-2026-91830 Subscribe to Comments < 2.3.3 - Unauthenticated Subscription Management Key Disclosure via Forged Comment Cookie
Unauthenticated attackers can disclose subscriber management keys via forged cookies, allowing them to read and modify user subscriptions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91830?
CVE-2026-91830 is a medium-severity vulnerability in Unknown Subscribe to Comments, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-200
Which versions are affected by CVE-2026-91830?
How do I fix CVE-2026-91830?
No fix has been published for CVE-2026-91830 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-91830 being exploited?
There is no known exploitation of CVE-2026-91830 in the wild and no public exploit code.
Sources
Also known as GHSA-vg8j-9jxp-q7qm.