CVE-2026-92779
High
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.
SeverityHigh
CVSS7.6
Exploit probability—
ProductBuilderio @builder.io/sdk-react
PublishedSep 16, 2026
First seenSep 16, 2026
Weakness typeCWE-1321Prototype pollution
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| BuilderIO @builder.io/sdk-react | v ≤ 5.2.11 | — |
| BuilderIO @builder.io/sdk-vue | v ≤ 5.2.11 | — |
| BuilderIO @builder.io/sdk-svelte | v ≤ 5.2.11 | — |
| BuilderIO @builder.io/sdk-solid | v ≤ 5.2.11 | — |
| BuilderIO @builder.io/sdk-qwik | v ≤ 0.25.13 | — |
| BuilderIO @builder.io/sdk-angular | v ≤ 0.25.13 | — |
| BuilderIO @builder.io/sdk-react-nextjs | v ≤ 0.25.13 | — |
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