Vulnerability DatabaseCVE-2026-91860
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CVE-2026-91860
Published:September 30, 2026
Updated:October 08, 2026
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
Affected Packages
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v25.2.0 <v25.2.9
Fix Suggestion:
Update to version v25.2.9
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v24.0.0 <v24.4.19
Fix Suggestion:
Update to version v24.4.19
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v25.0.0 <v25.1.12
Fix Suggestion:
Update to version v25.1.12
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v24.8.0-alpha1 <v24.9.18
Fix Suggestion:
Update to version v24.9.18
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v23.0.0 <v23.6.5
Fix Suggestion:
Update to version v23.6.5
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v24.5.0-alpha1 <v24.7.13
Fix Suggestion:
Update to version v24.7.13
https://github.com/vaadin/web-components.git (GITHUB):
Affected version(s) >=v24.10.0 <v24.10.5
Fix Suggestion:
Update to version v24.10.5
@vaadin/charts (NPM):
Affected version(s) >=24.5.0-alpha1 <24.7.13
Fix Suggestion:
Update to version 24.7.13
@vaadin/charts (NPM):
Affected version(s) >=23.0.0 <23.6.5
Fix Suggestion:
Update to version 23.6.5
@vaadin/charts (NPM):
Affected version(s) >=24.0.0 <24.4.19
Fix Suggestion:
Update to version 24.4.19
@vaadin/component-base (NPM):
Affected version(s) >=24.10.0 <24.10.5
Fix Suggestion:
Update to version 24.10.5
@vaadin/component-base (NPM):
Affected version(s) >=24.8.0-alpha1 <24.9.18
Fix Suggestion:
Update to version 24.9.18
@vaadin/component-base (NPM):
Affected version(s) >=24.7.0 <24.7.13
Fix Suggestion:
Update to version 24.7.13
@vaadin/component-base (NPM):
Affected version(s) >=25.0.0 <25.1.12
Fix Suggestion:
Update to version 25.1.12
@vaadin/charts (NPM):
Affected version(s) >=25.0.0 <25.1.12
Fix Suggestion:
Update to version 25.1.12
@vaadin/charts (NPM):
Affected version(s) >=24.10.0 <24.10.5
Fix Suggestion:
Update to version 24.10.5
@vaadin/charts (NPM):
Affected version(s) >=24.0.0 <24.9.18
Fix Suggestion:
Update to version 24.9.18
@vaadin/charts (NPM):
Affected version(s) >=25.2.0 <25.2.9
Fix Suggestion:
Update to version 25.2.9
@vaadin/component-base (NPM):
Affected version(s) >=25.2.0 <25.2.9
Fix Suggestion:
Update to version 25.2.9
Related Resources (14)
https://vaadin.com/security/cve-2026-91860
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91860.json
https://nvd.nist.gov/vuln/detail/CVE-2026-91860
https://registry.npmjs.org
https://github.com/vaadin/web-components/pull/12559
https://github.com/vaadin/web-components/pull/12483
https://github.com/vaadin/web-components/pull/12496
https://repo.maven.apache.org/maven2
https://github.com/vaadin/web-components/pull/12493
https://github.com/vaadin/flow-components
https://github.com/vaadin/web-components/pull/12492
https://github.com/vaadin/platform
https://github.com/vaadin/web-components
https://github.com/vaadin/web-components/pull/12494
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CVSS v4
Base Score:
6.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWE-1321
EPSS
Base Score:
0.47