{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93547","assignerOrgId":"9e0f3122-90e9-42d5-93de-8c6b98deef7e","state":"PUBLISHED","assignerShortName":"Vaadin","dateReserved":"2026-09-18T09:22:10.216Z","datePublished":"2026-09-30T13:13:13.074Z","dateUpdated":"2026-10-03T13:52:42.352Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin","product":"vaadin","repo":"https://github.com/vaadin/platform","vendor":"vaadin","versions":[{"lessThan":"23.6.14","status":"affected","version":"23.1.0","versionType":"maven"},{"lessThan":"24.9.22","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"24.10.10","status":"affected","version":"24.10.0","versionType":"maven"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"maven"},{"lessThan":"25.2.7","status":"affected","version":"25.2.0","versionType":"maven"}]},{"collectionURL":"https://repo.maven.apache.org/maven2","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin-spreadsheet-flow","product":"vaadin-spreadsheet-flow","repo":"https://github.com/vaadin/flow-components","vendor":"vaadin","versions":[{"lessThan":"23.6.14","status":"affected","version":"23.1.0","versionType":"maven"},{"lessThan":"24.9.22","status":"affected","version":"24.0.0","versionType":"maven"},{"lessThan":"24.10.10","status":"affected","version":"24.10.0","versionType":"maven"},{"lessThan":"25.1.12","status":"affected","version":"25.0.0","versionType":"maven"},{"lessThan":"25.2.7","status":"affected","version":"25.2.0","versionType":"maven"}]},{"collectionURL":"https://maven.vaadin.com/vaadin-addons","defaultStatus":"unaffected","packageName":"com.vaadin:vaadin-spreadsheet","product":"vaadin-spreadsheet","repo":"https://github.com/vaadin/spreadsheet","vendor":"vaadin","versions":[{"lessThan":"3.1.1","status":"affected","version":"2.0.0","versionType":"maven"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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 coordinatesVulnerable versionsFixed 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

"}],"value":"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.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.1.0 - 23.6.13\nVaadin 24.0.0 - 24.9.21\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\nVaadin Framework 7 and 8 with the Spreadsheet add-on 2.0.0 - 3.1.0\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.22\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\nUpgrade the Spreadsheet add-on to 3.1.1\n\nPlease 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.\n\nArtifacts\nMaven coordinates Vulnerable versions Fixed version\ncom.vaadin:vaadin 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.21 >=24.9.22\ncom.vaadin:vaadin 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-spreadsheet-flow 23.1.0 - 23.6.13 >=23.6.14\ncom.vaadin:vaadin-spreadsheet-flow 24.0.0 - 24.9.21 >=24.9.22\ncom.vaadin:vaadin-spreadsheet-flow 24.10.0 - 24.10.9 >=24.10.10\ncom.vaadin:vaadin-spreadsheet-flow 25.0.0 - 25.1.11 >=25.1.12\ncom.vaadin:vaadin-spreadsheet-flow 25.2.0 - 25.2.6 >=25.2.7\ncom.vaadin:vaadin-spreadsheet 2.0.0 - 3.1.0 >=3.1.1"}],"impacts":[{"capecId":"CAPEC-122","descriptions":[{"lang":"en","value":"CAPEC-122 Privilege Abuse"}]}],"metrics":[{"cvssV4_0":{"version":"4.0","vectorString":"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","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","Automatable":"NO","Recovery":"AUTOMATIC","Safety":"NEGLIGIBLE","valueDensity":"DIFFUSE","vulnerabilityResponseEffort":"LOW","providerUrgency":"CLEAR"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-285","description":"CWE-285 Improper Authorization","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9e0f3122-90e9-42d5-93de-8c6b98deef7e","shortName":"Vaadin","dateUpdated":"2026-10-03T13:52:42.352Z"},"references":[{"url":"https://vaadin.com/security/cve-2026-93547"},{"url":"https://github.com/vaadin/flow-components/pull/9905"},{"url":"https://github.com/vaadin/flow-components/pull/9907"},{"url":"https://github.com/vaadin/flow-components/pull/9908"},{"url":"https://github.com/vaadin/flow-components/pull/9909"},{"url":"https://github.com/vaadin/flow-components/pull/9910"},{"url":"https://github.com/vaadin/flow-components/pull/9956"},{"url":"https://github.com/vaadin/spreadsheet/pull/866"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Users of affected versions should apply the following mitigation or upgrade.
"}],"value":"Users of affected versions should apply the following mitigation or upgrade."}],"source":{"discovery":"EXTERNAL"},"title":"Missing Authorization Check in Vaadin Spreadsheet Allows Cell Comments to Be Written to Protected Sheets and Locked Cells","credits":[{"lang":"en","type":"finder","value":"Arpit Jain (GitHub: arpitjain099)"}],"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-30T14:25:51.477902Z","id":"CVE-2026-93547","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-30T14:26:02.005Z"}}]}}