CVE-2026-12866 (GCVE-0-2026-12866)

Vulnerability from cvelistv5 – Published: 2026-06-23 05:00 – Updated: 2026-06-27 15:25
VLAI?
Summary
All versions of the package expr-eval are vulnerable to Code Execution via the toJSFunction() API. An attacker can execute arbitrary JavaScript by supplying crafted expressions that are compiled into native code using new Function(). Because user-controlled expressions are transformed directly into executable JavaScript, attackers can escape the intended expression sandbox and run arbitrary code within the application's context.
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
n/a expr-eval Affected: 0 , < * (semver)
Credits
Dinh Twan Doan
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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