CVE-2026-77167Published

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 fol…

Explicit identifiers and source references

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-77167 · Microsoft / collected KEV context

cve-program · CVE-2026-77167

https://hackerone.com/reports/3679640

Related operational evidence

Explicit CVE identifiers

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 fol… · Newly collected advisory · 27 Oct 2026