CVE-2026-71250
4.3 MEDIUMpublic exploit availablePublished 2026-08-05 · Updated 2026-08-10
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-918
Public exploit & PoC references
References
Data: NVD (public domain). Analysis: local $0 model. Defensive use only.