MEDIUMCVSS 6.3Vulnerability
CVE-2026-76239
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.
Properties
- severity
- MEDIUM
- cvss_severity
- MEDIUM
- cvss_score
- 6.3
- retrieved_at
- 2026-09-25T15:10:02+00:00
- score
- 6.3
- last_source
- NVD
- cve_id
- CVE-2026-76239
- cvss_vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- signal_observed_at
- 2026-09-25T15:10:02+00:00
- vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
- published_at
- 2026-08-19T14:17:56.157
- last_modified
- 2026-09-24T20:06:30.133
Related Entities (2)
DESCRIBED_BY (1)
→[Source]NVD
HAS_WEAKNESS (1)
→[Weakness]Server-Side Request Forgery (SSRF)
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