CVE-2026-124422
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
61/100
Published: 2026-11-08
Modified: 2026-11-12
First seen: 2026-11-08
Status: active
Attack Surface
Network
Low Complexity
No Auth
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Passive
S:
X
AT:
None
VC:
Low
VI:
Low
VA:
None
Description
SunEditor from 3.0.0 before 3.4.0 contains a stored cross-site scripting vulnerability in html.clean() that rebuilds iframes from data-se-iframe-holder-attrs JSON without filtering srcdoc or uppercase SRC keys. Attackers can inject crafted HTML through paste, html.set, or html.insert to execute script in the host page origin when victims load or paste the content.
Weakness Classification (1)
Affected Software (2)
References & Advisories (5)
vendor-advisory
third-party-advisory
technical-description
release-notes
patch