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CVE-2026-77167

7.5 high Awaiting Analysis
NVD · CVE.org

Abusing the federated share endpoint, an attacker can write arbitrary rows into the oc_share_external database table. These rows persist indefinitely — there is no automatic cleanup mechanism. Three distinct denial-of-service conditions follow from this write primitive, all triggered from the same unauthenticated source and all self-renewing on a 24-hour cycle for as long as the injected rows remain in the database.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusPublished → Awaiting AnalysisNVD modified 2026-10-28 14:47
  2. StatusReceived → PublishedNVD modified 2026-10-27 16:15
  3. StatusPublished → ReceivedNVD modified 2026-10-27 17:17
  4. First seenCVSS 7.5 · nextcloudNVD modified 2026-10-27 16:15

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1