BuilderIO CVE debriefs

These pages are published after PatchSiren validates generated defensive summaries against stored public CVE and source evidence.

MEDIUM BuilderIO CVE published 2026-09-16

CVE-2026-92781

CVE-2026-92781 is a medium-severity vulnerability affecting Builder.io Gen2 SDKs through versions 5.2.11 and 0.25.13. The issue is a prototype pollution vulnerability in the unflatten helper that processes builder.userAttributes query parameters without prototype guards. Attackers can craft preview links with __proto__ or prototype segments to pollute Object.prototype in a visitor's browser when the SDK p [truncated]