CVE-2026-77414CWE-94code-injection

CVE-2026-77414

published August 22, 2026

CVSS
9.3
EPSS
1%
Percentile
46.4
In the wild
Unconfirmed
What it is

JSONata is a JSON query and transformation language. Prior to 1.8.8 and 2.2.1, the src/jsonata.js environment.lookup function used a bypassable hasOwnProperty check. Crafted expressions could use $hasOwnProperty, $spread, $string, prototype access, and $constructor to reach the object prototype and invoke process.getBuiltinModule with child_process, executing arbitrary code with the privileges of the host process. This issue is fixed in versions 1.8.8 and 2.2.1.

The record
Technical detail
CVSS
9.3 · NONE
CVSS v4.0
9.3 · 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
EPSS
0.00570 · 46.4th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-08-22T01:17Z
References (6)
https://github.com/jsonata-js/jsonata/commit/59e25144fc3b7125f6befd71b8a6e14e1fa610d2 · [email protected]https://github.com/jsonata-js/jsonata/pull/799 · [email protected]https://github.com/jsonata-js/jsonata/releases/tag/v1.8.8 · [email protected]https://github.com/jsonata-js/jsonata/releases/tag/v2.2.1 · [email protected]https://github.com/jsonata-js/jsonata/security/advisories/GHSA-2943-5xfg-gq5f · [email protected]https://github.com/jsonata-js/jsonata/security/advisories/GHSA-2943-5xfg-gq5f · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 21 AUG 20:51Z
    JSONata: Arbitrary Code Execution via crafted JSONata expressions
    cvelistv5