CVE-2026-17552— RRWO Plack::App::Prerender 服务端请求伪造漏洞

Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUEST_URI concatenation in call

Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUEST_URI concatenation in call. When the rewrite base is a plain string, the REQUEST_URI is appended to it, with no check that the path starts with a forward slash ('/'). When the rewrite base does not contain a path (which is the standard given in the SYNOPSIS), an attacker can create a request that changes the hostname. A request target starting with an at-sign ('@') changes the base to a RFC 3986 userinfo component. For example, a rewrite base of "https://example.com" with the submitted request "GET @192.168.1.2/" will send a request to "https://example.com@192.168.1.2/", with the rendered content returned to the attacker. This allows an attacker to access internal or restricted hosts that only the webserver has access to.

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服务端请求伪造(SSRF)

RRWO Plack::App::Prerender 服务端请求伪造漏洞

RRWO Plack::App::Prerender是RRWO个人开发者的一个Web应用预渲染组件。 RRWO Plack::App::Prerender 0.3.0之前版本存在服务端请求伪造漏洞，该漏洞源于未验证REQUEST_URI的拼接，可代理到任意主机，导致攻击者访问内部或受限主机。

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