SB2026071793 - Multiple vulnerabilities in JSONata

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Main Vulnerability Database SB2026071793

SB2026071793 - Multiple vulnerabilities in JSONata

Published: July 17, 2026

Security Bulletin ID SB2026071793
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 75% Medium 25%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Inefficient regular expression complexity (CVE-ID: CVE-2026-52746)

CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to inefficient regular expression complexity in the $toMillis function when processing crafted format values in user-supplied JSONata expressions. A remote attacker can supply a specially crafted expression to cause a denial of service.


2) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to improper access to object prototype properties in the lookup function when evaluating crafted JSONata expressions. A remote attacker can supply a specially crafted expression to execute arbitrary code.


3) Improper access control (CVE-ID: N/A)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to improper access control in environment.lookup when evaluating crafted JSONata expressions. A remote attacker can supply a specially crafted expression to execute arbitrary code.


4) Code Injection (CVE-ID: N/A)

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to improper control over dynamically managed code resources in expression evaluation logic when processing crafted JSONata expressions. A remote attacker can supply a specially crafted expression to execute arbitrary code.

The issue can be triggered by chaining multiple expression-manipulation behaviors, including overwriting $clone, destructuring functions or lambdas, and abusing proc.arguments.forEach in applyProcedure.


Remediation

Install update from vendor's website.

References