CVE-2026-12208
Description
A flaw was found in the jsonata JavaScript library. A prototype pollution vulnerability exists in the createFrame function in src/jsonata.js, allowing a remote attacker to manipulate object prototype attributes. This could lead to unauthorized modification of application behavior.
Statement
Red Hat ships the jsonata library as a dependency in several products including OpenShift Serverless, Red Hat JBoss EAP Expansion Pack (XP), Cryostat, and Konflux. The vulnerability allows prototype pollution via the createFrame function, which could be exploited if user-controlled input is passed to jsonata expressions. No upstream fix is currently available.
Mitigation
Do not pass untrusted or user-controlled input to jsonata expressions. If user input must be evaluated, sanitize it to prevent prototype pollution payloads targeting __proto__ or constructor.prototype.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.3 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | None | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Understanding the Weakness (CWE)
Integrity
Technical Impact: Modify Application Data
An attacker could modify sensitive data or program variables.
Integrity
Technical Impact: Execute Unauthorized Code or Commands
Other,Integrity
Technical Impact: Varies by Context; Alter Execution Logic
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