Low 4.8

blueprintUE Self-Hosted Edition before 4.3.6 contains an iframe injection vulnerability that...

CVE-2026-126814 First seen on SecPulse 05:53

Affected packages

Ecosystem	Package	Affected → Fixed	Fixed
blueprintue	blueprintueblueprintue-self-hosted-edition	≥ 1.0.0, < 4.3.6→ 4.3.6	4.3.6

Original description The description as published by the source.

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.

Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory

References

Key facts

CVSS v3: Low 3.5; CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS v4: Medium 4.8; CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Published: Nov 12, 2026
First seen on SecPulse: 05:53
GHSA: GHSA-g738-fv3j-jj4w
CWE: CWE-829

NVD GitHub Advisory

Tags(click for explanation)

Programming Languages

JavaScript

CWE

CWE-829

All

Blueprintue Blueprintue Self Hosted Edition

Detection sources

NIST National Vulnerability Database06:16
GitHub Security Advisories (Global)06:33
CVE.org (CVE Program・cvelistV5)05:53