{"id":"CVE-2026-107399","published":"2026-10-08T22:17:26.683","lastModified":"2026-10-14T02:16:57.060","description":"The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize applies no origin trust boundary in Mechanize::HTTP::Agent#response_follow_meta_refresh when Mechanize#follow_meta_refresh is enabled. A page containing a meta refresh to another origin causes headers configured through Mechanize#request_headers= to be reapplied to the refresh request, allowing an attacker who controls content in the crawl to capture bearer tokens or session cookies. The default configuration is not affected because follow_meta_refresh is false, and the exposure is limited to caller-supplied default headers. This issue is fixed in version 2.14.1.","cvssScore":6.8,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","cwes":["CWE-200","CWE-522"],"vendors":[],"products":[],"references":[{"url":"https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/commit/84c74df87d15f5d119df268ba6aa79bc1e16a2c3","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/pull/676","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/security/advisories/GHSA-c6rp-p8xm-4q9f","tags":[]}],"exploitRefs":[{"url":"https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/commit/84c74df87d15f5d119df268ba6aa79bc1e16a2c3","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/pull/676","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1","tags":[]},{"url":"https://github.com/sparklemotion/mechanize/security/advisories/GHSA-c6rp-p8xm-4q9f","tags":[]}],"hasPoc":true,"ai":null}