CVE-2026-54756
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
In Jodit Editor prior to version 4.12.18, the Jodit.configure() function and internal ConfigMerge/ConfigProto helpers merged user-supplied options without filtering prototype-mutating keys, leading to a Prototype Pollution vulnerability.
Risk Assessment
An attacker can inject malicious data into the editor configuration, potentially leading to application behavior modification, privilege escalation, or arbitrary code execution in the victim's browser.
Recommendation
Immediately update Jodit Editor to version 4.12.18 or later, which includes a fix that removes the prototype pollution vulnerability.
Other vulnerabilities in Jodit Editor
See all- CVE-2026-65841Medium
In Jodit Editor prior to version 4.13.6, the clean-html denyTags filter does not normalize foreign SVG or MathML script node names, allowing a script element to remain in editor.value and execute when content is loaded.
- CVE-2026-62324Medium
In Jodit Editor prior to version 4.12.31, the sanitizeHTMLElement method fails to use isDangerousUrl to normalize javascript: href values before checking the scheme, allowing case variants, control-byte prefixes, and embedded tabs or newlines to bypass filtering. A victim clicking a stored link can execute attacker-controlled script.
- CVE-2026-58263High
Jodit Editor versions before 4.12.28 contain an XSS vulnerability due to bypass of the clean-html sanitizer. An attacker can use MathML or <style> as a carrier to hide a dangerous element from the sanitizer, allowing onload or onfocus events to be placed in the editor. When the application renders the editor content, JavaScript code executes without user interaction.
- CVE-2026-55886Medium
Jodit Editor versions prior to 4.12.26 are vulnerable to Prototype Pollution via the Jodit.modules.Helpers.set() function. An attacker can pass a crafted key chain containing __proto__, constructor, or prototype, leading to Object.prototype modification and injection of unexpected properties.
- CVE-2023-42399Medium
A Cross-Site Scripting (XSS) vulnerability was found in Jodit Editor version 4.0.0-beta.86. The flaw allows a remote attacker to inject malicious JavaScript code through the rich text editor component.
Original NVD description (English source)
Jodit Editor is a WYSIWYG editor with written in pure TypeScript file and image editing capabilities. In versions prior to 4.12.18, Jodit.configure(options) — and the internal ConfigMerge / ConfigProto helpers — merged user-supplied options into the editor configuration without filtering prototype-mutating keys, potentially causing a Prototype Pollution vulnerability. A payload nested under an existing plain-object option such as controls could reach and mutate Object.prototype. Applications that pass user-controlled or partially user-controlled configuration into Jodit.configure() may be vulnerable. This issue was fixed in version 4.12.18.