{"id":"CVE-2026-77167","aliases":[],"title":"Abusing the federated share endpoint, an attacker can write arbitrary rows into the oc_share_external database table","description":"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database.","severity":"high","score":7.5,"published":"2026-10-27T16:15:34.778Z","modified":"2026-10-27T16:15:34.778Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://hackerone.com/reports/3679640"],"sources":[{"name":"CVE","id":"CVE-2026-77167","modified":"2026-10-27T16:15:34.778Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-77167"}],"assessments":[{"source":"CNA","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5}]}