CVE-2026-124422: jihong88 suneditor · Cross-site Scripting
Affects jihong88 suneditorSource CVE Database V5
Not known to be exploited · CVSS 5.3 Medium : upgrade to 3.4.0 when convenient.
Data as of 8 Nov 2026, 01:50 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 5.3 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 6.1 |
- Patch
- Available – fixed in 3.4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 8 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.
What to do
Upgrade jihong88 suneditor to 3.4.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| jihong88suneditor | Affected
| Fixed in
|
npmsuneditorpkg:npm/suneditorOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade SunEditor to version 3.4.0 or later, where this vulnerability is fixed. No other mitigation is indicated by the vendor advisory. Users should apply this official fix to prevent exploitation.
Description
SunEditor versions from 3.0.0 up to but not including 3.4.0 contain a stored cross-site scripting (XSS) vulnerability in the html.clean() function. This flaw arises because the function rebuilds iframes from JSON data without properly filtering certain attributes like srcdoc or uppercase SRC keys. An attacker can exploit this by injecting crafted HTML through paste, html.set, or html.insert methods, leading to script execution in the context of the host page when the content is loaded or pasted.
References
- github.com/JiHong88/suneditor/security/advisories/GHSA-q867-q2hw-f8gp (opens in a new tab)
- github.com/JiHong88/suneditor/commit/57db24ac218cd10942fed0bb8288e9cb40b334bb (opens in a new tab)
- github.com/JiHong88/suneditor/releases/tag/3.4.0 (opens in a new tab)
- github.com/JiHong88/suneditor/blob/3.3.3/src/core/logic/dom/html.js (opens in a new tab)
- vulncheck.com/advisories/suneditor-3.0.0-before-3.4.0-stored-xss-via-html-clean-iframe-placeholder (opens in a new tab)