Bug 2569422 - CVE-2026-77167 nextcloud: Nextcloud: Denial of Service via federated share endpoint abuse [epel-all]
Summary: CVE-2026-77167 nextcloud: Nextcloud: Denial of Service via federated share en...
Keywords:
Status: NEW
Alias: None
Product: Fedora EPEL
Classification: Fedora
Component: nextcloud
Version: epel10
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Andrew Bauer
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["030f4369-17f9-4ecd-8b59-a...
Depends On:
Blocks: CVE-2026-77167
TreeView+ depends on / blocked
 
Reported: 2026-11-10 11:29 UTC by Ganesh
Modified: 2026-11-10 11:29 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
Embargoed:


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Description Ganesh 2026-11-10 11:29:36 UTC
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.


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