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CVE-2026-76239

CVE-2026-76239 · Stigmem before 0.9.0a11 SSRF via unvalidated webhook delivery_address

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 5.3 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • stigmem-node

    Versions
    • ≥ 0, < 0.9.0a11: Affected (python)
    • 0.9.0a11: Not affected (python)

    Update to 0.9.0a11

  • stigmem-node PyPI

    Versions
    • 0.9.0a1
    • 0.9.0a10
    • 0.9.0a2
    • 0.9.0a3
    • 0.9.0a4
    • 0.9.0a5
    • 0.9.0a6
    • 0.9.0a7
    • 0.9.0a8
    • 0.9.0a9
    Affected ranges
    • ECOSYSTEM: < 0.9.0a11

    Update to 0.9.0a11

Original sources

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