Incorrect Authorization Affecting com.vaadin:vaadin-spreadsheet-flow package, versions [,23.6.14)[24.0.0,24.9.22)[24.10.0-beta1,24.10.10)[25.0.0-beta1,25.1.12)[25.2.0-beta1,25.2.7)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-COMVAADIN-20511645
- published5 Oct 2026
- disclosed30 Sept 2026
- creditArpit Jain
Introduced: 30 Sep 2026
NewCVE-2026-93547 (opens in a new tab)How to fix?
Upgrade com.vaadin:vaadin-spreadsheet-flow to version 23.6.14, 24.9.22, 24.10.10, 25.1.12, 25.2.7 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in SpreadsheetHandlerImpl.updateCellComment(), which writes the supplied text to the target cell without checking whether the active sheet is protected or the cell locked, unlike the edit, cut, and paste handlers in the same class, which consult Spreadsheet.isCellLocked() before writing. A user with access to a rendered spreadsheet can add or alter comments on a protected sheet and on locked cells, and create empty cells by targeting coordinates that hold none, by dispatching the comment update event directly rather than through the UI that withholds it. This requires an authenticated session with a protected spreadsheet rendered to it and no special configuration, and the effect stays within that user's session until the workbook is persisted or shared, at which point the altered comments reach everyone who opens it.