CVE catalog
CVE-2026-107399
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 Mechaniz
- Severity
- Medium · CVSS 6.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.36% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ruby-mechanize | sid | 2.14.1-1 | fixed |
| Debian | ruby-mechanize | forky | 2.14.1-1 | fixed |
| Debian | ruby-mechanize | trixie | 2.10.1-1 | vulnerable |
| Debian | ruby-mechanize | bookworm | 2.8.5-1 | vulnerable |
| Rubygems | mechanize | Not reported | 2.14.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ruby-mechanize | source | sid | 2.14.1-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-mechanize | source | forky | 2.14.1-1 | not yet assigned | Not reported | Not reported |
| Debian | ruby-mechanize | source | trixie | (unfixed) | not yet assigned | Not reported | Not reported |
| Debian | ruby-mechanize | source | bookworm | (unfixed) | not yet assigned | Not reported | Not reported |
| Rubygems | mechanize | rubygems | Not reported | 2.14.1 | Not reported | GHSA-C6RP-P8XM-4Q9F | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [ruby-mechanize]Affected
Details (2)
2.8.5-1· all · bookwormAffected
nvd · ruby-mechanize · debian · bookworm
2.8.5-1· all · bookwormAffected
nvd · ruby-mechanize · debian · bookworm
Observed:
References
- [https://github.com/advisories/GHSA-c6rp-p8xm-4q9f]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-107399]
- [https://osv.dev/vulnerability/CVE-2026-107399]
- [https://security-tracker.debian.org/tracker/CVE-2026-107399]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-107399.json]
[Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]