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
2026-10-08T02:51:54Z
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
0 Unknown introduced commit / All previous commits are affected
Last Affected
0
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other
0

Database specific

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