Sparklemotion Mechanize up to 2.14.0 Response Redirect Agent#response_redirect cross-domain policy

Summaryinfo

A vulnerability categorized as problematic has been discovered in Sparklemotion Mechanize up to 2.14.0. Affected by this vulnerability is the function Mechanize::HTTP::Agent#response_redirect of the component Response Redirect. The manipulation results in cross-domain policy. This vulnerability was named CVE-2026-107714. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Sparklemotion Mechanize up to 2.14.0. Affected is the function Mechanize::HTTP::Agent#response_redirect of the component Response Redirect. The manipulation with an unknown input leads to a cross-domain policy vulnerability. CWE is classifying the issue as CWE-942. The product uses a cross-domain policy file that includes domains that should not be trusted. This is going to have an impact on confidentiality. CVE summarizes:

The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize::HTTP::Agent#response_redirect treats redirects as same-origin when the host matches without consistently comparing scheme and port. A same-host HTTPS-to-HTTP redirect can send Authorization and Cookie headers over cleartext, while a same-host redirect to another port can send a caller-supplied Cookie header to a different service. Cookies in Mechanize#cookie_jar remain scoped separately; the issue affects caller-supplied headers and can disclose credentials without affecting integrity or availability. This issue is fixed in version 2.14.1.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-107714 since 10/08/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

Upgrading to version 2.14.1 eliminates this vulnerability.

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Productinfo

Vendor

• Sparklemotion

Name

• Mechanize

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14.0

Website

• Product: https://github.com/sparklemotion/mechanize/

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