CVE-2026-92779
Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings
CVSS Score
7.6
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1321 |
| Vendor | builderio |
| Product | @builder.io/sdk-react |
| Published | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
Low
Affected Versions
BuilderIO / @builder.io/sdk-react
0 ≤ 5.2.11
BuilderIO / @builder.io/sdk-vue
0 ≤ 5.2.11
BuilderIO / @builder.io/sdk-svelte
0 ≤ 5.2.11
BuilderIO / @builder.io/sdk-solid
0 ≤ 5.2.11
BuilderIO / @builder.io/sdk-qwik
0 ≤ 0.25.13
BuilderIO / @builder.io/sdk-angular
0 ≤ 0.25.13
BuilderIO / @builder.io/sdk-react-nextjs
0 ≤ 0.25.13
References
github.com: https://github.com/BuilderIO/builder/issues/4823 github.com: https://github.com/BuilderIO/builder github.com: https://github.com/BuilderIO/builder/blob/main/packages/sdks/src/functions/get-processed-block.ts#L84-L93 github.com: https://github.com/BuilderIO/builder/blob/main/packages/sdks/src/functions/set.ts#L7-L26 vulncheck.com: https://www.vulncheck.com/advisories/builder-io-gen2-sdks-through-5.2.11-prototype-pollution-via-bindings
Credits
George Chen