CVE-2026-93547

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit probability: 0.4% (27th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: cna:vaadin, epss
Trending — 4 sources updated this week
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.4%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
24
EG Risk 24/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity53% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.4%
EPSS %ILE
27th
KEV
Not listed

CISA SSVCTrack at every mission impact level.

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 30, 2026

Last Modified

October 3, 2026

Advisory Details (7)

Auto-updated Sep 30, 2026
Patch available. Sources: github_pr.
github_pr

fix: check cell lock state when editing cells and updating cell comments- #9905

Fix merged in vaadin/spreadsheet PR #866 on 2026-08-26 — awaiting tagged release

https://github.com/vaadin/spreadsheet/pull/866
github_pr Patch Available

fix: check cell lock state when updating cell comments (#9905) (CP: 23.6)

Patch available: vaadin/flow-components 23.6.14 (PR #9956 merged 2026-08-25)

https://github.com/vaadin/flow-components/pull/9956
github_pr

fix: check cell lock state when updating cell comments (#9905) (CP: 23.7)

Fix merged in vaadin/flow-components PR #9910 on 2026-08-19 — awaiting tagged release

https://github.com/vaadin/flow-components/pull/9910
github_pr Patch Available

fix: check cell lock state when updating cell comments (#9905) (CP: 24.10)

Patch available: vaadin/flow-components 24.10.10 (PR #9909 merged 2026-08-19)

https://github.com/vaadin/flow-components/pull/9909
github_pr Patch Available

fix: check cell lock state when updating cell comments (#9905) (CP: 25.1)

Patch available: vaadin/flow-components 25.1.12 (PR #9908 merged 2026-08-19)

https://github.com/vaadin/flow-components/pull/9908
github_pr Patch Available

fix: check cell lock state when updating cell comments (#9905) (CP: 25.2)

Patch available: vaadin/flow-components 25.2.7 (PR #9907 merged 2026-08-19)

https://github.com/vaadin/flow-components/pull/9907
github_pr Patch Available

fix: check cell lock state when updating cell comments

Patch available: vaadin/flow-components 25.3.0-alpha9 (PR #9905 merged 2026-08-19)

https://github.com/vaadin/flow-components/pull/9905

Vendor Advisories for CVE-2026-93547(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 16× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-04 12:42 UTCEG score recompute
  2. 2026-10-04 12:42 UTCGHSA enrichment
  3. 2026-10-03 14:26 UTCEPSS rescore
  4. 2026-10-03 14:01 UTCEG score recompute
  5. 2026-10-03 14:00 UTCGHSA enrichment
  6. 2026-10-03 13:01 UTCEG score recompute
  7. 2026-10-03 13:01 UTCGHSA enrichment
  8. 2026-10-02 14:16 UTCEG score recompute
  9. 2026-10-02 14:15 UTCGHSA enrichment
  10. 2026-10-01 19:51 UTCEPSS rescore
  11. 2026-10-01 15:33 UTCGHSA enrichment
  12. 2026-09-30 16:45 UTCGHSA enrichment
  13. 2026-09-30 15:37 UTCGHSA enrichment
  14. 2026-09-30 14:26 UTCEG score recompute
  15. 2026-09-30 13:32 UTCEG score recompute
  16. 2026-09-30 13:32 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-93547?
CVE-2026-93547 is a medium vulnerability published on September 30, 2026. 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…
When was CVE-2026-93547 disclosed?
CVE-2026-93547 was first published on September 30, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-93547 actively exploited?
CVE-2026-93547 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.4% probability of exploitation in the next 30 days (27th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-93547?
CVE-2026-93547 has a CVSS base score of 5.3 (the CNA's own assessment, by vaadin; NVD's own analysis pending).
How do I remediate CVE-2026-93547?
A fix for CVE-2026-93547 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-93547 are linked in the Vendor Advisories panel on this page.

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