What’s Vulnerable › Vulnerabilities

CVE-2026-55886: Jodit Editor: Prototype Pollution in Jodit via Jodit.modules.Helpers.set()

• Severity: medium (CVSS 6.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-01 · updated 2026-10-25
• Weakness: CWE-1321

Description

Jodit Editor is a WYSIWYG editor with written in pure TypeScript file and image editing capabilities. Versions prior to 4.12.26 are vulnerable to Prototype Pollution through Jodit.modules.Helpers.set(chain, value, obj), which walks the dot-separated chain, creating and following each path segment without filtering prototype-mutating keys. A chain that begins with (or contains) __proto__, constructor, or prototype lets the final assignment reach and mutate Object.prototype. Applications that pass a user-controlled or partially user-controlled key path into Jodit.modules.Helpers.set() could be vulnerable, causing unexpected property injection, logic bypass, denial of service, or secondary security issues. This issue has been fixed in version 4.12.26.

Affected products

• xdan jodit: before 4.12.26

References

• https://github.com/xdan/jodit/security/advisories/GHSA-vpmm-x3fm-qr5c
• https://github.com/xdan/jodit/security/advisories/GHSA-vpmm-x3fm-qr5c

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