Description
A weakness has been identified in jsonata-js jsonata up to 2.2.0. The affected element is the function createFrame of the file src/jsonata.js of the component Function Binding Frame System. This manipulation causes improperly controlled modification of object prototype attributes. It is possible to initiate the attack remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| jsonata-js | jsonata | 2.0, 2.1, 2.2.0 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | jsonata | < 1.8.8 | 1.8.8 | GHSA-663r-x48j-fg8p |
| npm | jsonata | >= 2.0.0, < 2.2.1 | 2.2.1 | GHSA-663r-x48j-fg8p |
Advisories 1
- WID-SEC-2026-3505 IBM App Connect Enterprise: Schwachstelle ermöglicht Codeausführung BSI CERT-Bund (WID) · Sep 21, 2026
References
- VDB-370850 | jsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollution vdb-entry technical-description
- VDB-370850 | CTI Indicators (IOB, IOC, TTP, IOA) signature permissions-required
- CVE-2026-12208 | CVE Analysis and Report third-party-advisory
- Submit #832446 | jsonata-js jsonata 2.2.0 Prototype Pollution third-party-advisory
- https://github.com/OriginSecurityX/jsonata-hasownproperty-bypass exploit