xdan jodit up to 4.12.17 Jodit.configure prototype pollution

Summaryinfo

A vulnerability, which was classified as critical, has been found in xdan jodit up to 4.12.17. Affected by this vulnerability is the function Jodit.configure. Performing a manipulation results in prototype pollution. This vulnerability is known as CVE-2026-54756. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in xdan jodit up to 4.12.17. This affects the function Jodit.configure. The manipulation with an unknown input leads to a prototype pollution vulnerability. CWE is classifying the issue as CWE-1321. The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2026-54756 since 06/16/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

Upgrading to version 4.12.18 eliminates this vulnerability.

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Productinfo

Vendor

• xdan

Name

• jodit

Version

• 4.12.0
• 4.12.1
• 4.12.2
• 4.12.3
• 4.12.4
• 4.12.5
• 4.12.6
• 4.12.7
• 4.12.8
• 4.12.9
• 4.12.10
• 4.12.11
• 4.12.12
• 4.12.13
• 4.12.14
• 4.12.15
• 4.12.16
• 4.12.17

Website

• Product: https://github.com/xdan/jodit/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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