Vulnerability · Published Jun 24, 2025 · Assigned by VulDB
CVE-2025-6533xxyopen/201206030 novel-plus CATCHA LoginController.java ajaxLogin authentication replay
Medium 5.6
In plain English
A medium-severity improper authentication in novel-plus from 201206030. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| xxyopen | novel-plus | 5.1.05.1.15.1.25.1.3 |
| 201206030 | novel-plus | 5.1.05.1.15.1.25.1.3 |
Weakness: CWE-294, CWE-287 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
References
- VDB-313652 | xxyopen/201206030 novel-plus CATCHA LoginController.java ajaxLogin authentication replay vdb-entry, technical-description
- VDB-313652 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
- Submit #596481 | xxyopen novel-plus 5.1.3 Improper Restriction of Excessive Authentication Attempts third-party-advisory
- https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection-bypass related
- https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection-bypass#poc exploit