CVE-2026-12208: Improperly Controlled Modification of Object Prototype Attributes in jsonata-js jsonata
CVE-2026-12208 is a medium severity vulnerability in jsonata-js jsonata versions 2.0, 2.1, and 2.2.0. It involves improper control over modification of object prototype attributes within the createFrame function of the Function Binding Frame System. The vulnerability can be exploited remotely without authentication. Although a public exploit exists, no official vendor response or patch has been provided.
AI Analysis
Technical Summary
This vulnerability affects the createFrame function in the src/jsonata.js file of jsonata-js jsonata up to version 2.2.0. It allows an attacker to improperly modify object prototype attributes, which can lead to unexpected behavior or security issues in applications using the affected library. The flaw can be triggered remotely without requiring privileges or user interaction. The vendor was contacted but did not respond, and no official remediation or patch is currently available.
Potential Impact
The vulnerability allows remote attackers to manipulate object prototype attributes improperly, potentially leading to security issues such as prototype pollution. This can affect the integrity and behavior of applications relying on the jsonata library. The CVSS 4.0 score of 6.9 indicates a medium severity impact with network attack vector, low attack complexity, no privileges or user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or vendor response is available, users should consider mitigating exposure by restricting access to services using the vulnerable jsonata versions or applying custom code reviews and validations to detect and prevent prototype pollution attempts.
CVE-2026-12208: Improperly Controlled Modification of Object Prototype Attributes in jsonata-js jsonata
Description
CVE-2026-12208 is a medium severity vulnerability in jsonata-js jsonata versions 2.0, 2.1, and 2.2.0. It involves improper control over modification of object prototype attributes within the createFrame function of the Function Binding Frame System. The vulnerability can be exploited remotely without authentication. Although a public exploit exists, no official vendor response or patch has been provided.
CVSS v4.0
Score 6.9medium
Affected software
cpe:2.3:a:jsonata-js:jsonata:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability affects the createFrame function in the src/jsonata.js file of jsonata-js jsonata up to version 2.2.0. It allows an attacker to improperly modify object prototype attributes, which can lead to unexpected behavior or security issues in applications using the affected library. The flaw can be triggered remotely without requiring privileges or user interaction. The vendor was contacted but did not respond, and no official remediation or patch is currently available.
Potential Impact
The vulnerability allows remote attackers to manipulate object prototype attributes improperly, potentially leading to security issues such as prototype pollution. This can affect the integrity and behavior of applications relying on the jsonata library. The CVSS 4.0 score of 6.9 indicates a medium severity impact with network attack vector, low attack complexity, no privileges or user interaction required, and limited impact on confidentiality and integrity.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or vendor response is available, users should consider mitigating exposure by restricting access to services using the vulnerable jsonata versions or applying custom code reviews and validations to detect and prevent prototype pollution attempts.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-06-14T12:25:38.149Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2f6c1d1cccde5f26d201d0
Added to database: 6/15/2026, 3:06:05 AM
Last enriched: 6/15/2026, 3:20:40 AM
Last updated: 6/15/2026, 4:07:28 AM
Views: 5
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