GHSA-g738-fv3j-jj4wMediumCVSS 3.5
blueprintUE Self-Hosted Edition before 4.3.6 contains an iframe injection vulnerability that...
🔗 CVE IDs covered (1)
📋 Description
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.
🔗 References (8)
- https://github.com/blueprintue/blueprintue-self-hosted-edition/security/advisories/GHSA-3vgc-fcfg-v233
- https://nvd.nist.gov/vuln/detail/CVE-2026-126814
- https://github.com/blueprintue/blueprintue-self-hosted-edition/pull/269
- https://github.com/blueprintue/blueprintue-self-hosted-edition/commit/5f13e2bb8cd4c620899e9f8afd41a6e62b3bc6a4
- https://github.com/blueprintue/blueprintue-self-hosted-edition/blob/v4.3.5/app/services/www/BlueprintService.php#L700-L716
- https://github.com/blueprintue/blueprintue-self-hosted-edition/releases/tag/v4.3.6
- https://www.vulncheck.com/advisories/blueprintue-self-hosted-edition-before-4.3.6-arbitrary-iframe-embedding-via-peertube-matcher
- https://github.com/advisories/GHSA-g738-fv3j-jj4w