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CVE-2026-76242

CVE-2026-76242 · stigmem Federation Peer Registration Authentication Bypass

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

stigmem-node 0.9.0a1 accepts federation peer key material during peer registration without a separate administrator out-of-band fingerprint approval step. On nodes that accept federation peer registration over a network where initial registration can be intercepted or misdirected, an attacker can register a malicious peer and gain access to or tamper with federation traffic. Fixed in 0.9.0a2, which introduces a pending approval flow requiring administrator fingerprint verification before peer tokens are accepted.

CVSS 9.1 · Critical · EPSS 0.3% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • stigmem

    Versions
    • ≥ 0, < 0.9.0a2: Affected (custom)
    • 0.9.0a2: Not affected (custom)

    Update to 0.9.0a2

  • stigmem-node PyPI

    Versions
    • 0.9.0a1
    Affected ranges
    • ECOSYSTEM: < 0.9.0a2

    Update to 0.9.0a2

Original sources

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