{"id":"CVE-2026-107399","revision":"97c2b62928664567ac91e250f15ca07f","records":[{"revision":"97c2b62928664567ac91e250f15ca07f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107399","aliases":[],"title":"Mechanize sends credential headers to another origin after a meta refresh","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.","state":0,"publishedAt":"2026-10-08T21:24:46.349+00:00","modifiedAt":"2026-10-14T01:21:37.665+00:00","affected":[{"ecosystem":"Vendor product","name":"mechanize","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sparklemotion\",\n                    \"product\": \"mechanize\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2.15.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","score":6.8,"severity":"MEDIUM"}],"references":["https://github.com/sparklemotion/mechanize/security/advisories/GHSA-c6rp-p8xm-4q9f","https://github.com/sparklemotion/mechanize/pull/676","https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f","https://github.com/sparklemotion/mechanize/commit/84c74df87d15f5d119df268ba6aa79bc1e16a2c3","https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107399","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107399","identifiers":["CVE-2026-107399"]},"retained":false,"historicalAffected":[]}],"coverage":[]}