CVE-2026-76239
Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address
CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-918 |
| Vendor | eidetic-labs |
| Product | stigmem |
| Published | Aug 19, 2026 |
| Last Updated | Aug 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
eidetic-labs / stigmem
0 < 0.9.0a11
References
Credits
🔍 chaitanyagarware