jsonata-js jsonata Function Binding Frame System jsonata.js createFrame prototype pollution
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 4.0 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-94.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| jsonata-js | jsonata | 2.0; 2.1; 2.2.0 | — | No fix listed | CNA |
| — | jsonata (npm) | before 1.8.8 | 1.8.8 | Patch available | GHSA-663r-x48j-fg8p |
| — | jsonata (npm) | 2.0.0 to before 2.2.1 | 2.2.1 | Patch available | GHSA-663r-x48j-fg8p |
- jsonata Vendorjsonata-js Affected 2.0; 2.1; 2.2.0 Fixed in — No fix listed CNA
- jsonata (npm) Vendor— Affected before 1.8.8 Fixed in 1.8.8 Patch available GHSA-663r-x48j-fg8p
- jsonata (npm) Vendor— Affected 2.0.0 to before 2.2.1 Fixed in 2.2.1 Patch available GHSA-663r-x48j-fg8p
CPE names CNA · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:jsonata-js:jsonata:*:*:*:*:*:*:*:* | — | — | — |
- cpe:2.3:a:jsonata-js:jsonata:*:*:*:*:*:*:*:* Versions — — ·—
Remediation
- Fix · GHSA-663r-x48j-fg8p jsonata (npm) Fixed in 1.8.8 Advisory →
- Fix · GHSA-663r-x48j-fg8p jsonata (npm) Fixed in 2.2.1 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| OpenShift Serverless | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-12208
- 2026-10-03 Alias added: GHSA-663r-x48j-fg8p
References
Other 7
- https://github.com/jsonata-js/jsonata/pull/799
- https://github.com/jsonata-js/jsonata/pull/806
- https://github.com/jsonata-js/jsonata/commit/59e25144fc3b7125f6befd71b8a6e14e1fa610d2
- https://github.com/jsonata-js/jsonata/commit/f09df8416eab8ff44926fc6527c80fb8701de159
- https://github.com/jsonata-js/jsonata
- https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8
- https://github.com/jsonata-js/jsonata/releases/tag/v2.2.1
More jsonata-js vulnerabilities
- TI-2026-54005 JSONata: Arbitrary Code Execution via crafted JSONata expressions CVSS 4.0CRITICAL 9.3
- TI-2026-54004 JSONata: Arbitrary Code Execution via crafted JSONata expressions CVSS 4.0CRITICAL 9.3
- TI-2026-54003 JSONata: Arbitrary Code Execution via crafted JSONata expressions CVSS 4.0CRITICAL 9.3
Sources
- CVE-2026-12208 · CVE Program
- CVE-2026-12208 · NVD
- FIRST EPSS
- GHSA-663r-x48j-fg8p · GitHub Advisory Database · CC BY 4.0
- CVE-2026-12208 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences