Description
Stigmem before 0.9.0a11 fails to validate the delivery_address parameter when creating webhook subscriptions, allowing authenticated users to specify internal loopback and private network destinations. Attackers can trigger matching fact-change events to cause the Stigmem server to issue server-side HTTP POST requests to internal services, enabling blind SSRF attacks against localhost and private network endpoints.
CVSS 6.3EPSS 0.265%Risk 0.65
View source- Published
- 2026-08-19 14:17:56
- Affected versions
- <0.9.0a11
- Type
- Library
- Last modified
- 2026-08-21 12:16:33
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L