{"id":"CVE-2026-107399","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107399","generatedAt":"2026-10-28T00:57:02.627Z","title":"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.","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.","published":"2026-10-08T22:17:27.000Z","lastModified":"2026-10-14T02:16:57.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.8,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N"},"cwe":["CWE-200","CWE-522"],"affected":[],"epss":{"score":0.00362,"percentile":0.29841,"date":"2026-10-26","history":[{"date":"2026-10-09","score":0.00362,"percentile":0.28057}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.36%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-08T22:17:27.000Z","detail":{"score":"6.8","severity":"MEDIUM","publishedAt":"2026-10-08T22:17:26.683Z"},"summary":"New CVE, medium severity (CVSS 6.8)."}],"references":[{"url":"https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f","source":"security-advisories@github.com"},{"url":"https://github.com/sparklemotion/mechanize/commit/84c74df87d15f5d119df268ba6aa79bc1e16a2c3","source":"security-advisories@github.com"},{"url":"https://github.com/sparklemotion/mechanize/pull/676","source":"security-advisories@github.com"},{"url":"https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1","source":"security-advisories@github.com"},{"url":"https://github.com/sparklemotion/mechanize/security/advisories/GHSA-c6rp-p8xm-4q9f","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107399","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}