CVE-2026-54756Published

Jodit Editor: Prototype pollution via Jodit.configure() / ConfigMerge

Collected exploitation and prediction evidence

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

cve-program · CVE-2026-54756

Published

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.

Source published: 1 Jul 2026 20:29:17 UTC
Source modified: 2 Jul 2026 14:41:32 UTC
Observed here: 23 Oct 2026 15:48:27 UTC
Source terms: CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

euvd · EUVD-2026-41139

Published

EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.

Original publisher date fields

datePublished: Jul 1, 2026, 8:29:17 PM

dateUpdated: Jul 2, 2026, 2:41:32 PM

Source published: Jul 1, 2026, 8:29:17 PM (timezone not stated)
Source modified: Jul 2, 2026, 2:41:32 PM (timezone not stated)
Observed here: 7 Nov 2026 12:31:06 UTC
Source terms: ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

nvd · CVE-2026-54756

Published

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Deferred

Weakness classifications: CWE-1321

Original publisher date fields

published: 2026-07-01T21:17:03.553

lastModified: 2026-10-25T16:10:00.147

Source published: 1 Jul 2026 21:17:03 UTC
Source modified: 25 Oct 2026 16:10:00 UTC
Observed here: 27 Oct 2026 14:13:40 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 6.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

osv · GHSA-5957-5c94-3v7w

Published

### Summary `Jodit.configure(options)` — and the internal `ConfigMerge` / `ConfigProto` helpers — merged user-supplied options into the editor configuration without filtering prototype-mutating keys. A payload nested under an existing plain-object option such as `controls` could reach and mutate `Object.prototype` (prototype pollution). ### Affected - Package: `jodit` (npm) - Versions: `< 4.12.18` - Public API: `Jodit.configure(options)` ### Proof of Concept ```js import { Jodit } from 'jodit'; delete Object.prototype.polluted; Jodit.configure(JSON.parse('{"controls":{"__proto__":{"polluted":"yes"}}}')); console.log(({}).polluted); // "yes" (before the fix) delete Object.prototype.polluted; ``` ### Impact Applications that pass user-controlled or partially user-controlled configuration into `Jodit.configure()` could be vulnerable to prototype pollution: unexpected property injection, logic bypass, denial of service, or secondary security issues. ### Patch Fixed in 4.12.18 by rejecting `__proto__`, `constructor`, and `prototype` at every merge level in `ConfigMerge` and `ConfigProto`. ### Credit Responsibly reported by Junming Wu.

Source published: 31 Jul 2026 19:10:16 UTC
Source modified: 31 Jul 2026 19:15:24 UTC
Observed here: 24 Oct 2026 13:17:17 UTC
Source terms: GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Publisher rating · MODERATE