CVE-2026-93634
CVE-2026-93634 · Zimbra Collaboration Suite Cross-Account Authorization Bypass via Forged Shared-File Records
This page contains facts from public vulnerability sources. Check the original advisory before updating.
A cross-account authorization vulnerability in Zimbra Collaboration Suite (ZCS) allows an authenticated user to insert forged shared-file records into another user's mailbox through FileSharedWithMeRequest. The request bypasses delegated-account authorization and accepts attacker-selected file metadata, owner identifiers and declared sizes without validating a corresponding document share. An attacker can plant entries attributed to another real local account without that account sharing a document. No victim interaction is required. ZCS 10.1.16 and 10.1.20 are affected.
CVSS 4.3 · Medium · EPSS 0.3%
- Published
- Updated
Affected products and versions
zimbra collaboration suite
- Versions
- ≥ 0, ≤ 10.1.20: Affected (semver)
No fix published