CVE-2026-4409 Subscribe To Comments Reloaded <= 240119 - Improper Authorization to Unauthenticated Arbitrary Subscription Management
Unauthenticated attackers can forge authorization keys to manage comment subscription preferences for arbitrary users due to leaked secrets and weak hashing.
- 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-2026-4409?
CVE-2026-4409 is a medium-severity missing authorization vulnerability in wpkube Subscribe To Comments Reloaded, published on 5 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Subscribe To Comments Reloaded plugin for WordPress is vulnerable to unauthorized modification of data due to a leaked secret key and usage of a weak hash generation algorithm in all versions up to, and including, 240119. This makes it possible for unauthenticated attackers to extract the global key from any public post page, forge authorization keys and manage comment subscription preferences for arbitrary users
Weakness: CWE-200
Which versions are affected by CVE-2026-4409?
How do I fix CVE-2026-4409?
No fix has been published for CVE-2026-4409 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4409 being exploited?
There is no known exploitation of CVE-2026-4409 in the wild and no public exploit code.
Sources
Also known as GHSA-gwh7-h25p-fjxv.