vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2026-93547

Missing Authorization Check in Vaadin Spreadsheet Allows Cell Comments to Be Written to Protected Sheets and Locked Cells

MEDIUM
5.3
CVSS Score
Published: September 30, 2026 at 01:13 PM UTC
Updated: October 3, 2026 at 01:52 PM UTC
3 products affected across 1 vendorVaadinVaadin Spreadsheet FlowSpreadsheet

Using vaadin by vaadin?

Get instant alerts when new vulnerabilities affect vaadin - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

A missing authorization check in the Vaadin Spreadsheet component allows an authenticated user of an application that renders a spreadsheet to add or replace cell comments on a sheet that has protection enabled, including on cells that are locked. Writing a comment to a cell that does not exist yet also creates the row and the cell. Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include: Product version Vaadin 23.1.0 - 23.6.13 Vaadin 24.0.0 - 24.9.21 Vaadin 24.10.0 - 24.10.9 Vaadin 25.0.0 - 25.1.11 Vaadin 25.2.0 - 25.2.6 Vaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0 Mitigation Upgrade to 23.6.14 Upgrade to 24.9.22 Upgrade to 24.10.10 Upgrade to 25.1.12 Upgrade to 25.2.7 or newer Upgrade the Spreadsheet add-on to 3.1.1 Please note that Vaadin versions 10-13 and 15-22 are no longer supported and you should update either to the latest 23, 24, 25 version. Artifacts Maven coordinates Vulnerable versions Fixed version com.vaadin:vaadin 23.1.0 - 23.6.13 >=23.6.14 com.vaadin:vaadin 24.0.0 - 24.9.21 >=24.9.22 com.vaadin:vaadin 24.10.0 - 24.10.9 >=24.10.10 com.vaadin:vaadin 25.0.0 - 25.1.11 >=25.1.12 com.vaadin:vaadin 25.2.0 - 25.2.6 >=25.2.7 com.vaadin:vaadin-spreadsheet-flow 23.1.0 - 23.6.13 >=23.6.14 com.vaadin:vaadin-spreadsheet-flow 24.0.0 - 24.9.21 >=24.9.22 com.vaadin:vaadin-spreadsheet-flow 24.10.0 - 24.10.9 >=24.10.10 com.vaadin:vaadin-spreadsheet-flow 25.0.0 - 25.1.11 >=25.1.12 com.vaadin:vaadin-spreadsheet-flow 25.2.0 - 25.2.6 >=25.2.7 com.vaadin:vaadin-spreadsheet 2.0.0 - 3.1.0 >=3.1.1

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Spreadsheet· Vaadinmaven
60%
2.0.0 ≤ v < 3.1.12.0.0
Affected range stops below 3.1.1, so it looks safe — our inference, not a vendor statement
Vaadin· Vaadinmaven
60%
23.1.0 ≤ v < 23.6.1424.0.0 ≤ v < 24.9.2224.10.0 ≤ v < 24.10.1025.0.0 ≤ v < 25.1.1225.2.0 ≤ v < 25.2.723.1.024.0.024.10.025.0.025.2.0
Affected range stops below 23.6.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.10.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.9.22, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.1.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.2.7, so it looks safe — our inference, not a vendor statement
Vaadin Spreadsheet Flow· Vaadinmaven
60%
23.1.0 ≤ v < 23.6.1424.0.0 ≤ v < 24.9.2224.10.0 ≤ v < 24.10.1025.0.0 ≤ v < 25.1.1225.2.0 ≤ v < 25.2.723.1.024.0.024.10.025.0.025.2.0
Affected range stops below 23.6.14, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.10.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 24.9.22, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.1.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 25.2.7, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (8)

Source: cverecord
https://vaadin.com/security/cve-2026-93547
Source: cverecord
https://github.com/vaadin/flow-components/pull/9905
Source: cverecord
https://github.com/vaadin/flow-components/pull/9907
Source: cverecord
https://github.com/vaadin/flow-components/pull/9908
Source: cverecord
https://github.com/vaadin/flow-components/pull/9909
Source: cverecord
https://github.com/vaadin/flow-components/pull/9910
Source: cverecord
https://github.com/vaadin/flow-components/pull/9956
Source: cverecord
https://github.com/vaadin/spreadsheet/pull/866

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMVaadin
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-285

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card