CVE-2026-107399

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Source
https://cve.org/CVERecord?id=CVE-2026-107399
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107399.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-107399
Aliases
Downstream
Published
2026-10-08T21:24:46Z
Modified
2026-10-11T02:30:52Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Mechanize sends credential headers to another origin after a meta refresh
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-200",
        "CWE-522"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107399.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "fixed": "2.15.0"
                }
            ],
            "source": "AFFECTED_FIELD"
        }
    ]
}
References

Affected packages

Git / github.com/sparklemotion/mechanize

Affected ranges

Type
GIT
Repo
https://github.com/sparklemotion/mechanize
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
02a1235842d6eda8d4a5a3d8f13aba2cecf52e4f
Fixed
84c74df87d15f5d119df268ba6aa79bc1e16a2c3
Fixed
a40941e3a29720850e5b6158340d78e239b4f9a5
Database specific
Show details 
{
    "source": "REFERENCES"
}

Affected versions

REL_0.*
REL_0.7.6
REL_0.7.7
REL_0.7.8
REL_0.8.0
REL_0.8.2
REL_0.8.3
REL_0.8.4
REL_0.9.1
REL_0.9.2
REL_1.*
REL_1.0.0
v2.*
v2.0
v2.0.1
v2.0.pre.1
v2.0.pre.2
v2.1
v2.1.1
v2.1.pre.1
v2.10.0
v2.10.1
v2.11.0
v2.12.0
v2.12.1
v2.12.2
v2.13.0
v2.14.0
v2.2
v2.2.1
v2.3
v2.4
v2.5
v2.5.1
v2.6.0
v2.7.0
v2.7.1
v2.7.2
v2.7.3
v2.7.4
v2.7.4.beta1
v2.7.4.beta2
v2.7.4.beta3
v2.7.5
v2.7.6
v2.7.7
v2.8.0
v2.8.1
v2.8.2
v2.8.3
v2.8.4
v2.8.5
v2.9.0
v2.9.1
v2.9.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-107399.json"