BLUEPRINTUE SELF-HOSTED EDITION · CVE-2026-126814 · Other
NO FIX YET · SEE WHAT TO DO
blueprintUE Self-Hosted Edition before 4.3.6 lets an authenticated user embed arbitrary third-party content through a flawed PeerTube video URL matcher in BlueprintService::findVideoProvider(). An attacker can host a blueprint video URL on their own server, and site.js loads it in an unsandboxed iframe after consent, so fake login forms or malware downloads can appear inside the site.
first public Nov 11, 2026 · 1 source
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Teams that run blueprintUE Self-Hosted Edition before 4.3.6 are exposed, and the exposure needs an authenticated account that can set a blueprint video URL. Teams on 4.3.6 or later, or who do not run the self-hosted edition, can skip it.
Not affected if no-authenticated-user-access, version-4.3.6-or-later
Who cares blueprintue, iframe, self-hosted
4.3.6.4.3.6.blueprintUE Self-Hosted Edition before 4.3.6 contains an iframe injection vulnerability that allows authenticated users to embed arbitrary third-party content by abusing the PeerTube video URL matcher in BlueprintService::findVideoProvider(). Attackers can set a blueprint video URL on an attacker-controlled host, which site.js loads in an unsandboxed iframe after consent, framing fake login forms or malware downloads.
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