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ALTCHA 数据伪造问题漏洞

🗓️ 16 Dec 2025 00:00:00Reported by China National Vulnerability Database of Information SecurityType 
cnnvd
 cnnvd
🔗 www.cnnvd.org.cn👁 11 Views

ALTCHA data forgery in self-hosted CAPTCHA: HMACs not bound to challenge parameters, enabling replay attacks.

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28 May 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.16.5
EPSS0.00452
SSVC
11