{"id":"CVE-2026-107715","summary":"Mechanize sends credential headers to another host after an HTTP redirect","details":"The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize sends caller-supplied credential headers to a different host after an HTTP redirect. Mechanize#request_headers= is reapplied by Mechanize::HTTP::Agent#request_add_headers even after Mechanize::HTTP::Agent#response_redirect strips per-request headers, and the protected header lists omit Proxy-Authorization and Cookie2. An attacker who controls a redirect target can capture bearer tokens or session cookies supplied through request_headers= or the per-request headers argument, while Mechanize#cookie_jar and Mechanize::HTTP::AuthStore are not affected. This issue is fixed in version 2.14.1.","aliases":["GHSA-2mwr-xjcg-37j7"],"modified":"2026-10-11T02:30:51.233449826Z","published":"2026-10-08T21:27:24.651Z","database_specific":{"cwe_ids":["CWE-200","CWE-522"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107715.json","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"2.15.0"}]}],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107715.json"},{"type":"ADVISORY","url":"https://github.com/sparklemotion/mechanize/security/advisories/GHSA-2mwr-xjcg-37j7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107715"},{"type":"FIX","url":"https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f"},{"type":"FIX","url":"https://github.com/sparklemotion/mechanize/commit/94e0902867296be804f36eccbb47acf7d5018745"},{"type":"FIX","url":"https://github.com/sparklemotion/mechanize/commit/ac49abf2869297d83c3b11bbfb8b18e63b588c95"},{"type":"FIX","url":"https://github.com/sparklemotion/mechanize/pull/676"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sparklemotion/mechanize","events":[{"introduced":"0"},{"fixed":"02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f"},{"fixed":"94e0902867296be804f36eccbb47acf7d5018745"},{"fixed":"ac49abf2869297d83c3b11bbfb8b18e63b588c95"},{"fixed":"a40941e3a29720850e5b6158340d78e239b4f9a5"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v2.14.0","v2.13.0","v2.12.2","v2.12.1","v2.12.0","v2.11.0","v2.10.1","v2.10.0","v2.9.2","v2.9.1","v2.9.0","v2.8.5","v2.8.4","v2.8.3","v2.8.2","v2.8.1","v2.8.0","v2.7.7","v2.7.6","v2.7.5","v2.7.4","v2.7.4.beta3","v2.7.4.beta2","v2.7.4.beta1","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.0","v2.5.1","v2.5","v2.4","v2.3","v2.2.1","v2.2","v2.1.1","v2.1","v2.1.pre.1","v2.0.1","v2.0","v2.0.pre.2","v2.0.pre.1","REL_1.0.0","REL_0.9.2","REL_0.9.1","REL_0.8.4","REL_0.8.3","REL_0.8.2","REL_0.8.0","REL_0.7.8","REL_0.7.7","REL_0.7.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107715.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"}]}