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

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-3dd97ed203 advisory.

    1.282 - Sanitize all user-supplied values before inserting into HTTP headers; Fixed CVE-2025-40927.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-47551b2aa2 advisory.

    1.282 - Sanitize all user-supplied values before inserting into HTTP headers; Fixed CVE-2025-40927.

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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 (CVE-2025-40927)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
278291	Fedora 43 : perl-CGI-Simple (2025-3dd97ed203)	Nessus	Fedora Local Security Checks	high
278160	Fedora 42 : perl-CGI-Simple (2025-47551b2aa2)	Nessus	Fedora Local Security Checks	high
261102	Linux Distros Unpatched Vulnerability : CVE-2025-40927	Nessus	Misc.	high

Detections

Analytics

CVE-2025-40927

high

Tenable Plugins

high

high

high