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Advisories

Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address

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severity
medium
date
Affecting

  • stigmem >= 0, < 0.9.0a11

CWE
  • CWE-918 Server-Side Request Forgery (SSRF)
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Credit
chaitanyagarware
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.

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