GHSA-vpmm-x3fm-qr5c

Source

https://github.com/advisories/GHSA-vpmm-x3fm-qr5c

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-vpmm-x3fm-qr5c/GHSA-vpmm-x3fm-qr5c.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-vpmm-x3fm-qr5c

Aliases

CVE-2026-55886

Published

2026-06-18T13:05:01Z

Modified

2026-07-31T14:45:18Z

Severity

6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator

Summary

jodit: Prototype pollution in Jodit via Jodit.modules.Helpers.set()

Details

Summary

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).

Affected

Package: jodit (npm)
Versions: < 4.12.26
Public API: Jodit.modules.Helpers.set(chain, value, obj)

Proof of Concept

const { Jodit } = require('jodit');
delete Object.prototype.polluted;
Jodit.modules.Helpers.set('__proto__.polluted', 'yes', {});
console.log(({}).polluted); // "yes" (before the fix)
delete Object.prototype.polluted;

Impact

Applications that pass a user-controlled or partially user-controlled key path into Jodit.modules.Helpers.set() could be vulnerable to prototype pollution (CWE-1321): unexpected property injection, logic bypass, denial of service, or secondary security issues.

Patch

Fixed in 4.12.26 by rejecting any chain whose segments include __proto__, constructor, or prototype, reusing the same guard introduced for Jodit.configure() in 4.12.18.

Credit

Responsibly reported by Junming Wu.

Database specific

{
    "cwe_ids":  [
        "CWE-1321"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-06-18T13:05:01Z",
    "nvd_published_at":  "2026-07-01T21:17:04Z",
    "severity":  "MODERATE"
}

References

Affected packages

npm / jodit

Package

Name: jodit; View open source insights on deps.dev
Purl: pkg:npm/jodit

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

4.12.26

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-vpmm-x3fm-qr5c/GHSA-vpmm-x3fm-qr5c.json"