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A vulnerability was found in mod_auth_mellon before v0.14.2. An open redirect in the logout URL allows requests with backslashes to pass through by assuming that it is a relative URL, while the browsers silently convert backslash characters into forward slashes treating them as an absolute URL. This mismatch allows an attacker to bypass the redirect URL validation logic in apr_uri_parse function.

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指向未可信站点的URL重定向(开放重定向)

mod_auth_mellon 输入验证错误漏洞

mod_auth_mellon是一款使用在Apache中的身份验证模块。 mod_auth_mellon中存在安全漏洞，该漏洞源于程序会将接收到的带有斜杠的请求认定为相对URL，而浏览器则会将其认定为绝对URL并将斜杠字符转换成正斜杠。攻击者可利用该漏洞绕过重定向URL逻辑。

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