CVE-2026-91860 (GCVE-0-2026-91860)
Vulnerability from cvelistv5 – Published: 2026-09-30 13:13 – Updated: 2026-09-30 14:26
VLAI
EPSS
VEX
Title
Prototype Pollution in Vaadin Charts and Component Base via Unfiltered Deep Merge
Summary
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
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:26 UTC
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
7 references
Impacted products
5 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| vaadin | vaadin |
Affected:
23.0.0 , < 23.6.14
(maven)
Affected: 24.0.0 , < 24.9.21 (maven) Affected: 24.10.0 , < 24.10.10 (maven) Affected: 25.0.0 , < 25.1.12 (maven) Affected: 25.2.0 , < 25.2.7 (maven) |
guessed | |
| vaadin | vaadin-core |
Affected:
24.7.0 , < 24.9.21
(maven)
Affected: 24.10.0 , < 24.10.10 (maven) Affected: 25.0.0 , < 25.1.12 (maven) Affected: 25.2.0 , < 25.2.7 (maven) |
guessed | |
| vaadin | vaadin-charts-flow |
Affected:
23.0.0 , < 23.6.14
(maven)
Affected: 24.0.0 , < 24.9.21 (maven) Affected: 24.10.0 , < 24.10.10 (maven) Affected: 25.0.0 , < 25.1.12 (maven) Affected: 25.2.0 , < 25.2.7 (maven) |
guessed | |
| vaadin | @vaadin/charts |
Affected:
23.0.0 , < 23.6.5
(semver)
Affected: 24.0.0 , < 24.9.18 (semver) Affected: 24.10.0 , < 24.10.5 (semver) Affected: 25.0.0 , < 25.1.12 (semver) Affected: 25.2.0 , < 25.2.9 (semver) |
guessed | |
| vaadin | @vaadin/component-base |
Affected:
24.7.0 , < 24.9.18
(semver)
Affected: 24.10.0 , < 24.10.5 (semver) Affected: 25.0.0 , < 25.1.12 (semver) Affected: 25.2.0 , < 25.2.9 (semver) |
guessed |
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"options": [
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"timestamp": "2026-09-30T14:26:16.234947Z",
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{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "com.vaadin:vaadin",
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"repo": "https://github.com/vaadin/platform",
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"versions": [
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"status": "affected",
"version": "23.0.0",
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"versionType": "maven"
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{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "com.vaadin:vaadin-core",
"product": "vaadin-core",
"repo": "https://github.com/vaadin/platform",
"vendor": "vaadin",
"versions": [
{
"lessThan": "24.9.21",
"status": "affected",
"version": "24.7.0",
"versionType": "maven"
},
{
"lessThan": "24.10.10",
"status": "affected",
"version": "24.10.0",
"versionType": "maven"
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{
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},
{
"collectionURL": "https://repo.maven.apache.org/maven2",
"defaultStatus": "unaffected",
"packageName": "com.vaadin:vaadin-charts-flow",
"product": "vaadin-charts-flow",
"repo": "https://github.com/vaadin/flow-components",
"vendor": "vaadin",
"versions": [
{
"lessThan": "23.6.14",
"status": "affected",
"version": "23.0.0",
"versionType": "maven"
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{
"lessThan": "24.9.21",
"status": "affected",
"version": "24.0.0",
"versionType": "maven"
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{
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"status": "affected",
"version": "24.10.0",
"versionType": "maven"
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{
"lessThan": "25.1.12",
"status": "affected",
"version": "25.0.0",
"versionType": "maven"
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{
"lessThan": "25.2.7",
"status": "affected",
"version": "25.2.0",
"versionType": "maven"
}
]
},
{
"collectionURL": "https://registry.npmjs.org",
"defaultStatus": "unaffected",
"packageName": "@vaadin/charts",
"product": "@vaadin/charts",
"repo": "https://github.com/vaadin/web-components",
"vendor": "vaadin",
"versions": [
{
"lessThan": "23.6.5",
"status": "affected",
"version": "23.0.0",
"versionType": "semver"
},
{
"lessThan": "24.9.18",
"status": "affected",
"version": "24.0.0",
"versionType": "semver"
},
{
"lessThan": "24.10.5",
"status": "affected",
"version": "24.10.0",
"versionType": "semver"
},
{
"lessThan": "25.1.12",
"status": "affected",
"version": "25.0.0",
"versionType": "semver"
},
{
"lessThan": "25.2.9",
"status": "affected",
"version": "25.2.0",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://registry.npmjs.org",
"defaultStatus": "unaffected",
"packageName": "@vaadin/component-base",
"product": "@vaadin/component-base",
"repo": "https://github.com/vaadin/web-components",
"vendor": "vaadin",
"versions": [
{
"lessThan": "24.9.18",
"status": "affected",
"version": "24.7.0",
"versionType": "semver"
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{
"lessThan": "24.10.5",
"status": "affected",
"version": "24.10.0",
"versionType": "semver"
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{
"lessThan": "25.1.12",
"status": "affected",
"version": "25.0.0",
"versionType": "semver"
},
{
"lessThan": "25.2.9",
"status": "affected",
"version": "25.2.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Ridwan Arefin Islam, Madiba Security Lab, Concordia University"
}
],
"descriptions": [
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"supportingMedia": [
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"value": "\u003cspan style=\"background-color: rgba(232, 232, 232, 0.04);\"\u003eA 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\u0027s i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eUsers of affected versions should apply the following mitigation or upgrade. 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"version": "25.2.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Ridwan Arefin Islam, Madiba Security Lab, Concordia University"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cspan style=\"background-color: rgba(232, 232, 232, 0.04);\"\u003eA 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\u0027s i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\u003cbr\u003e\u003cbr\u003eProduct version\u003cbr\u003eVaadin 23.0.0 - 23.6.13\u003cbr\u003eVaadin 24.0.0 - 24.9.20\u003cbr\u003eVaadin 24.10.0 - 24.10.9\u003cbr\u003eVaadin 25.0.0 - 25.1.11\u003cbr\u003eVaadin 25.2.0 - 25.2.6\u003cbr\u003e\u003cbr\u003eMitigation\u003cbr\u003eUpgrade to 23.6.14\u003cbr\u003eUpgrade to 24.9.21\u003cbr\u003eUpgrade to 24.10.10\u003cbr\u003eUpgrade to 25.1.12\u003cbr\u003eUpgrade to 25.2.7 or newer\u003cbr\u003e\u003cbr\u003ePlease 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.\u003cbr\u003e\u003cbr\u003eArtifacts\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003eMaven coordinates\u003c/td\u003e\u003ctd\u003eVulnerable versions\u003c/td\u003e\u003ctd\u003eFixed version\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e23.0.0 - 23.6.13\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;23.6.14\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.0.0 - 24.9.20\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.9.21\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.10.0 - 24.10.9\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.10.10\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.0.0 - 25.1.11\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.1.12\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.2.0 - 25.2.6\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.2.7\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-core\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.7.0 - 24.9.20\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.9.21\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-core\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.10.0 - 24.10.9\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.10.10\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-core\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.0.0 - 25.1.11\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.1.12\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-core\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.2.0 - 25.2.6\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.2.7\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-charts-flow\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e23.0.0 - 23.6.13\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;23.6.14\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-charts-flow\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.0.0 - 24.9.20\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.9.21\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-charts-flow\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.10.0 - 24.10.9\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.10.10\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-charts-flow\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.0.0 - 25.1.11\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.1.12\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003ecom.vaadin:vaadin-charts-flow\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.2.0 - 25.2.6\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.2.7\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003cbr\u003e\u003cbr\u003enpm packages\u003ctable\u003e\u003ctbody\u003e\u003ctr\u003e\u003ctd\u003enpm package\u003c/td\u003e\u003ctd\u003eVulnerable versions\u003c/td\u003e\u003ctd\u003eFixed version\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/charts\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e23.0.0 - 23.6.4\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;23.6.5\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/charts\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.0.0 - 24.9.17\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.9.18\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/charts\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.10.0 - 24.10.4\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.10.5\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/charts\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.0.0 - 25.1.11\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.1.12\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/charts\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.2.0 - 25.2.8\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.2.9\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/component-base\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.7.0 - 24.9.17\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.9.18\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/component-base\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e24.10.0 - 24.10.4\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;24.10.5\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/component-base\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.0.0 - 25.1.11\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.1.12\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003ctr\u003e\u003ctd\u003e@vaadin/component-base\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e25.2.0 - 25.2.8\u003cbr\u003e\u003c/td\u003e\u003ctd\u003e\u0026ge;25.2.9\u003cbr\u003e\u003c/td\u003e\u003c/tr\u003e\u003c/tbody\u003e\u003c/table\u003e\u003cbr\u003e\u003c/span\u003e"
}
],
"value": "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\u0027s i18n property writes onto Object.prototype, making the injected properties visible to every object in the running application.\n\n\nUsers of affected versions should apply the following mitigation or upgrade. Releases that have fixed this issue include:\n\nProduct version\nVaadin 23.0.0 - 23.6.13\nVaadin 24.0.0 - 24.9.20\nVaadin 24.10.0 - 24.10.9\nVaadin 25.0.0 - 25.1.11\nVaadin 25.2.0 - 25.2.6\n\nMitigation\nUpgrade to 23.6.14\nUpgrade to 24.9.21\nUpgrade to 24.10.10\nUpgrade to 25.1.12\nUpgrade to 25.2.7 or newer\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 23.0.0 - 23.6.13 \u003e=23.6.14\ncom.vaadin:vaadin 24.0.0 - 24.9.20 \u003e=24.9.21\ncom.vaadin:vaadin 24.10.0 - 24.10.9 \u003e=24.10.10\ncom.vaadin:vaadin 25.0.0 - 25.1.11 \u003e=25.1.12\ncom.vaadin:vaadin 25.2.0 - 25.2.6 \u003e=25.2.7\ncom.vaadin:vaadin-core 24.7.0 - 24.9.20 \u003e=24.9.21\ncom.vaadin:vaadin-core 24.10.0 - 24.10.9 \u003e=24.10.10\ncom.vaadin:vaadin-core 25.0.0 - 25.1.11 \u003e=25.1.12\ncom.vaadin:vaadin-core 25.2.0 - 25.2.6 \u003e=25.2.7\ncom.vaadin:vaadin-charts-flow 23.0.0 - 23.6.13 \u003e=23.6.14\ncom.vaadin:vaadin-charts-flow 24.0.0 - 24.9.20 \u003e=24.9.21\ncom.vaadin:vaadin-charts-flow 24.10.0 - 24.10.9 \u003e=24.10.10\ncom.vaadin:vaadin-charts-flow 25.0.0 - 25.1.11 \u003e=25.1.12\ncom.vaadin:vaadin-charts-flow 25.2.0 - 25.2.6 \u003e=25.2.7\n\nnpm packages\nnpm package Vulnerable versions Fixed version\n@vaadin/charts 23.0.0 - 23.6.4 \u003e=23.6.5\n@vaadin/charts 24.0.0 - 24.9.17 \u003e=24.9.18\n@vaadin/charts 24.10.0 - 24.10.4 \u003e=24.10.5\n@vaadin/charts 25.0.0 - 25.1.11 \u003e=25.1.12\n@vaadin/charts 25.2.0 - 25.2.8 \u003e=25.2.9\n@vaadin/component-base 24.7.0 - 24.9.17 \u003e=24.9.18\n@vaadin/component-base 24.10.0 - 24.10.4 \u003e=24.10.5\n@vaadin/component-base 25.0.0 - 25.1.11 \u003e=25.1.12\n@vaadin/component-base 25.2.0 - 25.2.8 \u003e=25.2.9"
}
],
"impacts": [
{
"capecId": "CAPEC-77",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-77 Manipulating User-Controlled Variables"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NO",
"Recovery": "AUTOMATIC",
"Safety": "NEGLIGIBLE",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 6.3,
"baseSeverity": "MEDIUM",
"privilegesRequired": "NONE",
"providerUrgency": "CLEAR",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "DIFFUSE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "LOW",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "LOW",
"vulnerabilityResponseEffort": "LOW"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-1321",
"description": "CWE-1321 Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-09-30T13:13:05.996Z",
"orgId": "9e0f3122-90e9-42d5-93de-8c6b98deef7e",
"shortName": "Vaadin"
},
"references": [
{
"url": "https://vaadin.com/security/cve-2026-91860"
},
{
"url": "https://github.com/vaadin/web-components/pull/12483"
},
{
"url": "https://github.com/vaadin/web-components/pull/12492"
},
{
"url": "https://github.com/vaadin/web-components/pull/12493"
},
{
"url": "https://github.com/vaadin/web-components/pull/12494"
},
{
"url": "https://github.com/vaadin/web-components/pull/12496"
},
{
"url": "https://github.com/vaadin/web-components/pull/12559"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "\u003cb\u003e\u003cspan style=\"background-color: transparent;\"\u003eUsers of affected versions should apply the following mitigation or upgrade.\u003c/span\u003e\u003c/b\u003e\u003cbr\u003e"
}
],
"value": "Users of affected versions should apply the following mitigation or upgrade."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Prototype Pollution in Vaadin Charts and Component Base via Unfiltered Deep Merge",
"x_generator": {
"engine": "Vulnogram 0.5.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "9e0f3122-90e9-42d5-93de-8c6b98deef7e",
"assignerShortName": "Vaadin",
"cveId": "CVE-2026-91860",
"datePublished": "2026-09-30T13:13:05.996Z",
"dateReserved": "2026-09-15T09:33:38.900Z",
"dateUpdated": "2026-09-30T14:26:23.618Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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