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CVE-2026-91860

Prototype Pollution in Vaadin Charts and Component Base via Unfiltered Deep Merge

vaadin vaadin
Open in ThreatlineRecord JSON
CVSS
6.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.47%Chance of exploitation activity in the next 30 days, higher than 39% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in23.6.14Also 24.9.21, 24.10.10 and 6 moreCVE List
Published30 Sep 2026Updated 30 Sep 2026CVE List

What fixes it

Show all 23 fixed versions

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

A prototype pollution vulnerability exists in the deep merge helpers of Vaadin Charts and Vaadin Component Base. Merging an object the application does not control into a chart configuration or into a component's i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.

Users of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:

Product version Vaadin 23.0.0 - 23.6.13 Vaadin 24.0.0 - 24.9.20 Vaadin 24.10.0 - 24.10.9 Vaadin 25.0.0 - 25.1.11 Vaadin 25.2.0 - 25.2.6

Mitigation Upgrade to 23.6.14 Upgrade to 24.9.21 Upgrade to 24.10.10 Upgrade to 25.1.12 Upgrade to 25.2.7 or newer

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 23.0.0 - 23.6.13 >=23.6.14 com.vaadin:vaadin 24.0.0 - 24.9.20 >=24.9.21 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-core 24.7.0 - 24.9.20 >=24.9.21 com.vaadin:vaadin-core 24.10.0 - 24.10.9 >=24.10.10 com.vaadin:vaadin-core 25.0.0 - 25.1.11 >=25.1.12 com.vaadin:vaadin-core 25.2.0 - 25.2.6 >=25.2.7 com.vaadin:vaadin-charts-flow 23.0.0 - 23.6.13 >=23.6.14 com.vaadin:vaadin-charts-flow 24.0.0 - 24.9.20 >=24.9.21 com.vaadin:vaadin-charts-flow 24.10.0 - 24.10.9 >=24.10.10 com.vaadin:vaadin-charts-flow 25.0.0 - 25.1.11 >=25.1.12 com.vaadin:vaadin-charts-flow 25.2.0 - 25.2.6 >=25.2.7

npm packages npm package Vulnerable versions Fixed version @vaadin/charts 23.0.0 - 23.6.4 >=23.6.5 @vaadin/charts 24.0.0 - 24.9.17 >=24.9.18 @vaadin/charts 24.10.0 - 24.10.4 >=24.10.5 @vaadin/charts 25.0.0 - 25.1.11 >=25.1.12 @vaadin/charts 25.2.0 - 25.2.8 >=25.2.9 @vaadin/component-base 24.7.0 - 24.9.17 >=24.9.18 @vaadin/component-base 24.10.0 - 24.10.4 >=24.10.5 @vaadin/component-base 25.0.0 - 25.1.11 >=25.1.12 @vaadin/component-base 25.2.0 - 25.2.8 >=25.2.9

Text from CVE List

Affected versions 23

  • vaadinaffected: 23.0.0 before 23.6.14CVE List
  • vaadinaffected: 24.0.0 before 24.9.21CVE List
  • vaadinaffected: 24.10.0 before 24.10.10CVE List
  • vaadinaffected: 25.0.0 before 25.1.12CVE List
  • vaadinaffected: 25.2.0 before 25.2.7CVE List
  • vaadin-coreaffected: 24.7.0 before 24.9.21CVE List
  • vaadin-coreaffected: 24.10.0 before 24.10.10CVE List
  • vaadin-coreaffected: 25.0.0 before 25.1.12CVE List
  • vaadin-coreaffected: 25.2.0 before 25.2.7CVE List
  • vaadin-charts-flowaffected: 23.0.0 before 23.6.14CVE List
  • vaadin-charts-flowaffected: 24.0.0 before 24.9.21CVE List
  • vaadin-charts-flowaffected: 24.10.0 before 24.10.10CVE List
  • vaadin-charts-flowaffected: 25.0.0 before 25.1.12CVE List
  • vaadin-charts-flowaffected: 25.2.0 before 25.2.7CVE List
  • @vaadin/chartsaffected: 23.0.0 before 23.6.5CVE List
  • @vaadin/chartsaffected: 24.0.0 before 24.9.18CVE List
  • @vaadin/chartsaffected: 24.10.0 before 24.10.5CVE List
  • @vaadin/chartsaffected: 25.0.0 before 25.1.12CVE List
  • @vaadin/chartsaffected: 25.2.0 before 25.2.9CVE List
  • @vaadin/component-baseaffected: 24.7.0 before 24.9.18CVE List
  • @vaadin/component-baseaffected: 24.10.0 before 24.10.5CVE List
  • @vaadin/component-baseaffected: 25.0.0 before 25.1.12CVE List
  • @vaadin/component-baseaffected: 25.2.0 before 25.2.9CVE List

References 7