CVE-2026-82982

Summary

The Approval app's approve/reject endpoint is meant to require the file's current etag as a freshness check, preventing an approver from approving or rejecting a file whose contents changed after they reviewed it. The backend only enforced this check when the etag parameter was present and non-empty in the request. An attacker able to intercept and modify the approval request could omit the etag field entirely, bypassing the freshness check and approving or rejecting a file version they never reviewed.

Affected Software

VendorProductVersion RangeStatus
NextcloudApproval1.0.0 <= 3.0.0affected

Weaknesses

  • CWE-840: CWE-840 Business Logic Errors

References