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.
References (5)
Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry
technical-description
https://vuldb.com/?id.313652
Permissions Required, VDB Entry signature
permissions-required
https://vuldb.com/?ctiid.313652
Third Party Advisory, VDB Entry third-party-advisory
https://vuldb.com/?submit.596481
Exploit, Third Party Advisory related
https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection-bypass
Exploit, Third Party Advisory exploit
https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection-bypass#poc
Scores
CVSS v3
5.6
EPSS
0.0047
EPSS Percentile
37.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-287
CWE-294
CWE-307
Status
published
Products (1)
xxyopen/novel-plus
< 5.1.3
Published
Jun 24, 2025
Tracked Since
Feb 18, 2026