CVE-2026-76239
Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address
- State
- Published
- Severity
- 5.3 Medium
- Published
- Aug 19, 2026
- Updated
- Aug 21, 2026
- Reserved
- Aug 19, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | 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 | VulnCheck |
| 3.1 | 6.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
stigmem-nodeeidetic-labs |
|
References
- GitHub Security Advisory (GHSA-5p3m-vhh6-9236)vendor-advisory
- VulnCheck Advisory: Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_addressthird-party-advisory
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