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.
Published: 2026-10-08
Score: 5.9 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
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History

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'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

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

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

Link: CVE-2026-107714

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

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

Link: CVE-2026-107714

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses
  • CWE-200

    Exposure of Sensitive Information to an Unauthorized Actor

  • CWE-319

    Cleartext Transmission of Sensitive Information

  • CWE-522

    Insufficiently Protected Credentials