Exposed dangerous method or function in expr-eval and expr-eval-fork - CVE-2025-12735
Published: November 10, 2025 / Updated: January 7, 2026
Vulnerability identifier: #VU118228
CSH Severity: High
CVSS v4.0: 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
CVE-ID: CVE-2025-12735
CWE-ID: CWE-749
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Silent Matt
Joren Broekema
Joren Broekema
Affected software:
expr-eval
expr-eval-fork
expr-eval
expr-eval-fork
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected application.
The vulnerability exists due to the application uses the unsafe evaluate() method on untrusted input. A remote attacker can pass specially crafted data to the application and execute arbitrary JavaScript code.
How to mitigate CVE-2025-12735
The vulnerability is resolved in expr-eval-fork library.