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CVE-2026-58263— Jodit Editor: Mutation XSS in jodit clean-html via a MathML/style rawtext carrier

Quick assessment

Affected
xdan jodit
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Valerii jodit是Valerii个人开发者的一款网页文本编辑器插件。 Valerii jodit 4.12.28之前版本存在跨站脚本漏洞，该漏洞源于内置clean-html净化器可被绕过，导致事件处理器存活于编辑器值中，可能造成Mutation XSS。

CVSS 7.2 · High EPSS 0.30% · P22

Affected Version Matrix 1

VendorProduct Version RangeStatus
xdan jodit < 4.12.28 affected
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I. Basic Information for CVE-2026-58263

Vulnerability Information
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Vulnerability Title
Jodit Editor: Mutation XSS in jodit clean-html via a MathML/style rawtext carrier
Source: CVE Program / CVE List V5
Vulnerability Description
Jodit Editor is a WYSIWYG editor with a built-in file browser & image editor. In versions prior to 4.12.28, the built-in clean-html sanitizer can be bypassed by a MathML/<style> carrier that hides a dangerous element from the sanitizer's element walk, so a no-interaction event handler survives into the editor value, potentially causing Mutation XSS. When an application supplies attacker-influenced HTML to the editor's value-set or insertion paths, the sanitized output still contains a live <img ... onload=...> (or another non-onerror handler such as onfocus). A consumer that renders that output (element.innerHTML = editor.value) executes the handler with no user interaction. This issue has been fixed in version 4.12.28.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Valerii jodit 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Valerii jodit是Valerii个人开发者的一款网页文本编辑器插件。 Valerii jodit 4.12.28之前版本存在跨站脚本漏洞，该漏洞源于内置clean-html净化器可被绕过，导致事件处理器存活于编辑器值中，可能造成Mutation XSS。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
xdan jodit < 4.12.28 -

II. Public POCs for CVE-2026-58263

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 8741 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-58263

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Vendor Advisories for CVE-2026-58263 (1)

Same Patch Batch · xdan · 2026-07-01 · 3 CVEs total

CVE-2026-54756 Jodit Editor: Prototype pollution via Jodit.configure() / ConfigMerge
CVE-2026-55886 Jodit Editor: Prototype Pollution in Jodit via Jodit.modules.Helpers.set()

IV. Related Vulnerabilities

Same product: jodit
Same vendor: xdan
Same weakness: CWE-79