CVE-2025-6533 xxyopen/201206030 novel-plus CATCHA LoginController.java ajaxLogin authentication replay
Attackers can bypass authentication in novel-plus by replaying captured login requests, potentially gaining unauthorized access to user accounts.
- 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-2025-6533?
CVE-2025-6533 is a medium-severity authentication bypass vulnerability in Xxyopen Novel-Plus, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability, which was classified as critical, has been found in xxyopen/201206030 novel-plus up to 5.1.3. Affected by this issue is the function ajaxLogin of the file novel-admin/src/main/java/com/java2nb/system/controller/LoginController.java of the component CATCHA Handler. The manipulation leads to authentication bypass by capture-replay. The attack may be launched remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2025-6533?
It affects 1 product.
Products include Xxyopen Novel-Plus.
How do I fix CVE-2025-6533?
No fix has been published for CVE-2025-6533 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-6533 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-6533 exists.
Other vulnerabilities in Xxyopen Novel-Plus
Sources
Also known as GHSA-m4cp-r954-7x4c.