CVE-2026-124491: medium-severity vulnerability in JiHong88 suneditor
SunEditor before 3.4.0 Stored XSS via FileUpload Plugin Filename
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
SunEditor before 3.4.0 contains a stored cross-site scripting vulnerability in the FileUpload plugin create() method that assigns server-returned file names to innerHTML without escaping. Attackers can upload files with HTML-laden names that bypass html.clean() and execute JavaScript in victims' browsers when content or gallery items load, enabling session theft.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Affected products
JiHong88 · suneditorRelated CVEs — JiHong88 suneditor
In the same product, most dangerous first.
CVE-2026-54606HIGHSunEditor: DOM XSS in SunEditor Embed Plugin via External Script Element After Iframe EmbedEPSS 0.6%CVE-2026-59167CRITICALSunEditor: Critical XSS vulnerability - sanitizer bypassEPSS 0.5%CVE-2026-124494CRITICALSunEditor before 3.4.0 Stored XSS via : Entity Sanitizer BypassEPSS 0.3%CVE-2026-124493CRITICALSunEditor before 3.4.0 Stored XSS via DocumentType Header textContentEPSS 0.3%CVE-2026-124492HIGHSunEditor before 3.4.0 Stored XSS via Link Modal Bookmark ListEPSS 0.2%