The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize::HTTP::Agent#response_redirect treats redirects as same-origin when the host matches without consistently comparing scheme and port. A same-host HTTPS-to-HTTP redirect can send Authorization and Cookie headers over cleartext, while a same-host redirect to another port can send a caller-supplied Cookie header to a different service. Cookies in Mechanize#cookie_jar remain scoped separately; the issue affects caller-supplied headers and can disclose credentials without affecting integrity or availability. This issue is fixed in version 2.14.1.
History

Fri, 09 Oct 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 09 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Sparklemotion
Sparklemotion mechanize
Vendors & Products Sparklemotion
Sparklemotion mechanize

Fri, 09 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-346
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 08 Oct 2026 21:30:00 +0000

Type Values Removed Values Added
Description The Mechanize library is used for automating interaction with websites. Prior to 2.14.1, Mechanize::HTTP::Agent#response_redirect treats redirects as same-origin when the host matches without consistently comparing scheme and port. A same-host HTTPS-to-HTTP redirect can send Authorization and Cookie headers over cleartext, while a same-host redirect to another port can send a caller-supplied Cookie header to a different service. Cookies in Mechanize#cookie_jar remain scoped separately; the issue affects caller-supplied headers and can disclose credentials without affecting integrity or availability. This issue is fixed in version 2.14.1.
Title Mechanize sends credential headers to a different scheme or port after a redirect
Weaknesses CWE-200
CWE-319
CWE-522
References
Metrics cvssV3_1

{'score': 5.9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-08T21:26:16.092Z

Updated: 2026-10-09T15:06:49.265Z

Reserved: 2026-10-08T17:21:52.975Z

Link: CVE-2026-107714

cve-icon Vulnrichment

Updated: 2026-10-09T15:06:45.880Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-08T22:17:27.003

Modified: 2026-10-09T16:38:57.820

Link: CVE-2026-107714

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-08T21:26:16Z

Links: CVE-2026-107714 - Bugzilla