{"schema":"threatline.record/2","record":{"id":"CVE-2026-93547","aliases":[],"summary":"Missing Authorization Check in Vaadin Spreadsheet Allows Cell Comments to Be Written to Protected Sheets and Locked Cells","details":"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","categories":["Unclassified"],"product":"vaadin","vendor":"vaadin","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"vaadin","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"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"vaadin-spreadsheet-flow","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"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"vaadin-spreadsheet","vendor":"vaadin","versions":[{"lessThan":"3.1.1","status":"affected","version":"2.0.0","versionType":"maven"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vaadin","ecosystem":null},"version":"23.6.14","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vaadin","ecosystem":null},"version":"24.9.22","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vaadin","ecosystem":null},"version":"24.10.10","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vaadin","ecosystem":null},"version":"25.1.12","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","source_modified_at":"2026-10-03T13:52:42.352Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"vaadin","ecosystem":null},"version":"25.2.7","basis":"first unaffected version stated in the CVE record"},{"source":"CVE 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record"}],"cvss":5.3,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00363,"percentile":0.28929,"score_date":"2026-10-23"},"published_at":"2026-09-30T13:13:13.074Z","modified_at":"2026-10-03T13:52:42.352Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-93547","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-03T13:52:42.352Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-93547","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://vaadin.com/security/cve-2026-93547"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9905"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9907"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9908"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9909"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9910"},{"source":"CVE List","url":"https://github.com/vaadin/flow-components/pull/9956"},{"source":"CVE List","url":"https://github.com/vaadin/spreadsheet/pull/866"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-09-30T14:25:51.477902Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-03T13:52:42.352Z","content_hash":"ba2f38b77be084553f825f80575cda2c05f9b88d3092628187b98380be6db314"}}