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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-93547
StatePUBLISHED
AssignerVaadin
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-30 14:17:34 UTC
Updated2026-09-30 16:38:20 UTC
DescriptionA 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

Risk And Classification

Primary CVSS: v4.0 5.3 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-285 | CWE-285 CWE-285 Improper Authorization

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS5.3MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Vaadin Vaadin affected 23.1.0 23.6.14 maven Not specified
CNA Vaadin Vaadin affected 24.0.0 24.9.22 maven Not specified
CNA Vaadin Vaadin affected 24.10.0 24.10.10 maven Not specified
CNA Vaadin Vaadin affected 25.0.0 25.1.12 maven Not specified
CNA Vaadin Vaadin affected 25.2.0 25.2.7 maven Not specified
CNA Vaadin Vaadin-spreadsheet-flow affected 23.1.0 23.6.14 maven Not specified
CNA Vaadin Vaadin-spreadsheet-flow affected 24.0.0 24.9.22 maven Not specified
CNA Vaadin Vaadin-spreadsheet-flow affected 24.10.0 24.10.10 maven Not specified
CNA Vaadin Vaadin-spreadsheet-flow affected 25.0.0 25.1.12 maven Not specified
CNA Vaadin Vaadin-spreadsheet-flow affected 25.2.0 25.2.7 maven Not specified
CNA Vaadin Vaadin-spreadsheet affected 2.0.0 3.1.1 maven Not specified

References

ReferenceSourceLinkTags
github.com/vaadin/flow-components/pull/9909 [email protected] github.com
github.com/vaadin/flow-components/pull/9956 [email protected] github.com
github.com/vaadin/flow-components/pull/9907 [email protected] github.com
github.com/vaadin/flow-components/pull/9908 [email protected] github.com
github.com/vaadin/spreadsheet/pull/866 [email protected] github.com
github.com/vaadin/flow-components/pull/9905 [email protected] github.com
github.com/vaadin/flow-components/pull/9910 [email protected] github.com
vaadin.com/security/cve-2026-93547 [email protected] vaadin.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Arpit Jain (en)

Additional Advisory Data

Solutions

CNA: Users of affected versions should apply the following mitigation or upgrade.

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