CVE-2025-40927 - Perl CGI::Simple HTTP Response Splitting Vulnerability

CVE-2025-40927 - Perl CGI::Simple HTTP Response Splitting Vulnerability

https://cvefeed.io/rssfeed/latest.atom / Fri, 08/29/2025 - 05:36
CVE ID : CVE-2025-40927
Published : Aug. 29, 2025, 1:15 a.m. | 1 hour, 21 minutes ago
Description : CGI::Simple versions before 1.282 for Perl has a HTTP response splitting flaw This vulnerability is a confirmed HTTP response splitting flaw in CGI::Simple that allows HTTP response header injection, which can be used for reflected XSS or open redirect under certain conditions. Although some validation exists, it can be bypassed using URL-encoded values, allowing an attacker to inject untrusted content into the response via query parameters. As a result, an attacker can inject a line break (e.g. %0A) into the parameter value, causing the server to split the HTTP response and inject arbitrary headers or even an HTML/JavaScript body, leading to reflected cross-site scripting (XSS), open redirect or other attacks. The issue documented in CVE-2010-4410 https://www.cve.org/CVERecord?id=CVE-2010-4410 is related but the fix was incomplete. Impact By injecting %0A (newline) into a query string parameter, an attacker can: * Break the current HTTP header * Inject a new header or entire body * Deliver a script payload that is reflected in the server’s response That can lead to the following attacks: * reflected XSS * open redirect * cache poisoning * header manipulation
Severity: 0.0 | NA
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