6.3

CVE-2026-91860

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

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
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellervaadin
≫
Produkt vaadin
Default Statusunaffected
Version 23.0.0
Version < 23.6.14
Status affected
Version 24.0.0
Version < 24.9.21
Status affected
Version 24.10.0
Version < 24.10.10
Status affected
Version 25.0.0
Version < 25.1.12
Status affected
Version 25.2.0
Version < 25.2.7
Status affected
Herstellervaadin
≫
Produkt vaadin-core
Default Statusunaffected
Version 24.7.0
Version < 24.9.21
Status affected
Version 24.10.0
Version < 24.10.10
Status affected
Version 25.0.0
Version < 25.1.12
Status affected
Version 25.2.0
Version < 25.2.7
Status affected
Herstellervaadin
≫
Produkt vaadin-charts-flow
Default Statusunaffected
Version 23.0.0
Version < 23.6.14
Status affected
Version 24.0.0
Version < 24.9.21
Status affected
Version 24.10.0
Version < 24.10.10
Status affected
Version 25.0.0
Version < 25.1.12
Status affected
Version 25.2.0
Version < 25.2.7
Status affected
Herstellervaadin
≫
Produkt @vaadin/charts
Default Statusunaffected
Version 23.0.0
Version < 23.6.5
Status affected
Version 24.0.0
Version < 24.9.18
Status affected
Version 24.10.0
Version < 24.10.5
Status affected
Version 25.0.0
Version < 25.1.12
Status affected
Version 25.2.0
Version < 25.2.9
Status affected
Herstellervaadin
≫
Produkt @vaadin/component-base
Default Statusunaffected
Version 24.7.0
Version < 24.9.18
Status affected
Version 24.10.0
Version < 24.10.5
Status affected
Version 25.0.0
Version < 25.1.12
Status affected
Version 25.2.0
Version < 25.2.9
Status affected
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.47% 0.382
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@vaadin.com 6.3 0 0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

https://vaadin.com/security/cve-2026-91860
https://github.com/vaadin/web-components/pull/12483
https://github.com/vaadin/web-components/pull/12492
https://github.com/vaadin/web-components/pull/12493
https://github.com/vaadin/web-components/pull/12494
https://github.com/vaadin/web-components/pull/12496
https://github.com/vaadin/web-components/pull/12559