cvedb.io
CVE-2026-42889
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-05-12T20:16:42.143 · Last modified 2026-06-17T10:48:34.350

Summary

Relay adds real-time collaboration to Obsidian. Relay Server versions 0.9.0 through 0.9.6 contain an authentication bypass in the multi-document WebSocket endpoints. When authentication is configured, WebSocket connections without a token query parameter were incorrectly treated as having full server permissions. An unauthenticated network attacker who knows or guesses a document ID could connect to the document sync WebSocket and read or modify document contents without a valid document token. This vulnerability is fixed in 0.9.7.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.