CVE-2026-17552 (GCVE-0-2026-17552)

Vulnerability from cvelistv5 – Published: 2026-07-27 18:04 – Updated: 2026-07-28 13:47
VLAI
Title
Plack::App::Prerender versions before 0.3.0 for Perl can proxy to an arbitrary host via unvalidated REQUEST_URI concatenation in call
Summary
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-28 13:46 UTC
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
CPANSec CNA
References
Impacted products
Vendor Product Version
RRWO Plack::App::Prerender Affected: 0 , < 0.3.0 (custom)
Create a notification for this product.
Show details on NVD website
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