CVE-2026-107715
mediumThe Mechanize library is used for automating interaction with websites.
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/sparklemotion/mechanize/commit/02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f security-advisories@github.com
- https://github.com/sparklemotion/mechanize/commit/94e0902867296be804f36eccbb47acf7d5018745 security-advisories@github.com
- https://github.com/sparklemotion/mechanize/commit/ac49abf2869297d83c3b11bbfb8b18e63b588c95 security-advisories@github.com
- https://github.com/sparklemotion/mechanize/pull/676 security-advisories@github.com
- https://github.com/sparklemotion/mechanize/releases/tag/v2.14.1 security-advisories@github.com
- https://github.com/sparklemotion/mechanize/security/advisories/GHSA-2mwr-xjcg-37j7 security-advisories@github.com
- https://github.com/sparklemotion/mechanize/security/advisories/GHSA-2mwr-xjcg-37j7 134c704f-9b21-4f2e-91b3-4a467353bcc0