CVE-2026-92779 Builder.io Gen2 SDKs through 5.2.11 Prototype Pollution via Bindings
Prototype pollution in Builder.io SDKs allows attackers to execute arbitrary code or escalate privileges by crafting malicious content block bindings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-92779?
CVE-2026-92779 is a high-severity code injection vulnerability in BuilderIO @builder.io/sdk-angular, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-1321
Which versions are affected by CVE-2026-92779?
How do I fix CVE-2026-92779?
No fix has been published for CVE-2026-92779 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-92779 being exploited?
There is no known exploitation of CVE-2026-92779 in the wild and no public exploit code.
Sources
Also known as GHSA-4qmr-g3pc-xvhm.