CVE-2026-55886: jodit: Prototype pollution in Jodit via Jodit.modules.Helpers.set()

June 18, 2026

Jodit.modules.Helpers.set(chain, value, obj) 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 (prototype pollution).

References

github.com/advisories/GHSA-vpmm-x3fm-qr5c
github.com/xdan/jodit/security/advisories/GHSA-vpmm-x3fm-qr5c
nvd.nist.gov/vuln/detail/CVE-2026-55886

Code Behaviors & Features

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