CVE-2026-92779

Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings

Published Sep 16, 2026 CVSS 4.0 · 7.2 High EPSS < 1% KEV · Not listed
Description
Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the deep-set helper function that processes content block bindings without validation. Attackers can craft content blocks with binding keys containing __proto__, prototype, or constructor paths to pollute Object.prototype during rendering, affecting all subsequent objects created in the process including other tenants' renders.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Builderio
Builderio sdk-angular
Builderio sdk-qwik
Builderio sdk-react
Builderio sdk-react-nextjs
Builderio sdk-solid
Builderio sdk-svelte
Builderio sdk-vue
Vendors & Products Builderio
Builderio sdk-angular
Builderio sdk-qwik
Builderio sdk-react
Builderio sdk-react-nextjs
Builderio sdk-solid
Builderio sdk-svelte
Builderio sdk-vue
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13 contain a prototype pollution vulnerability in the deep-set helper function that processes content block bindings without validation. Attackers can craft content blocks with binding keys containing __proto__, prototype, or constructor paths to pollute Object.prototype during rendering, affecting all subsequent objects created in the process including other tenants' renders.
Title Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings
Weaknesses CWE-1321
References
Metrics cvssV3_1

{'score': 7.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 17, 2026, 7:25 PM
Reserved
Sep 16, 2026, 7:22 PM
Status
Deferred
Published
Sep 16, 2026, 9:17 PM
Modified
Sep 24, 2026, 9:08 PM