CVE-2025-6533

low-risk
Published 2025-06-24

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.

Do I need to act?

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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.6/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Xxyopen

References (6)

Exploit https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection...
Exploit https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection...
Permissions Required https://vuldb.com/?ctiid.313652
Third Party Advisory https://vuldb.com/?id.313652
Third Party Advisory https://vuldb.com/?submit.596481
Exploit https://blog.0xd00.com/blog/captcha-replay-attack-lead-to-brute-force-protection...
24
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal