CVE-2026-26747

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Source

https://cve.org/CVERecord?id=CVE-2026-26747

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26747.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-26747

Published

2026-02-20T00:00:00Z

Modified

2026-07-15T01:48:59.973466604Z

Severity

9.1 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N CVSS Calculator

Summary

[none]

Details

A Host Header Poisoning vulnerability exists in Monica 4.1.2 due to improper handling of the HTTP Host header in app/Providers/AppServiceProvider.php, combined with the default misconfiguration where the "app.force_url" is not set and default is "false". The application generates absolute URLs (such as those used in password reset emails) using the user-supplied Host header. This allows remote attackers to poison the password reset link sent to a victim,

Database specific

{
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26747.json"
}

References

Affected packages

Git / github.com/monicahq/monica

Affected ranges

Type

GIT

Repo

https://github.com/monicahq/monica

Events

Introduced

32028ce3ce79cef38df5d27a297e5b20680f0065

Last affected

32028ce3ce79cef38df5d27a297e5b20680f0065

Database specific

{
    "source": "CPE_STRING",
    "cpe": "cpe:2.3:a:monicahq:monica:4.1.2:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "4.1.2"
        },
        {
            "last_affected": "4.1.2"
        }
    ]
}

Affected versions

4.*

4.1.2

v4.*

v4.1.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-26747.json"