CVE-2026-71250

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Source

https://cve.org/CVERecord?id=CVE-2026-71250

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71250.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-71250

Published

2026-08-05T10:57:08Z

Modified

2026-10-28T02:30:40Z

Severity

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

Summary

Firefly III - Webhook URL Validation Explicitly Allows Loopback and Is Bypassable via DNS Rebinding

Details

Firefly III's webhook URL validator (IsValidWebhookUrl.php) filters most private/reserved IPv4 ranges but contains an explicit early-return that allows any resolved address in 127.0.0.0/8, permitting an authenticated user (with webhooks enabled, which is off by default) to configure a webhook targeting loopback services on the server.

Database specific

{
    "cna_assigner":  "TuranSec",
    "cwe_ids":  [
        "CWE-918"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/71xxx/CVE-2026-71250.json"
}

References

Affected packages

Git / github.com/firefly-iii/firefly-iii

Affected ranges

Type

GIT

Repo

https://github.com/firefly-iii/firefly-iii

Events

Introduced

Last Affected

Database specific

Show details

{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "last_affected":  "0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandaloneSingleVersion"
        }
    ]
}

Affected versions

Other

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-71250.json"