CVE-2025-12735
expr-eval:
Severity
CriticalRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · November 5, 2025
Updated · November 21, 2025
Description
A vulnerability was discovered in the expr-eval npm package, a JavaScript library used to parse and evaluate mathematical expressions. The issue allows an attacker to define arbitrary functions within the context object used by the parser's evaluate() method. By providing maliciously crafted input, an attacker can exploit this flaw to inject and execute arbitrary system-level commands on the host system. This could lead to the execution of malicious code.
Statement
Although expr-eval is listed as a bundled dependency in grafana-pcp in RHEL 8, the library is not present in the compiled JavaScript bundle and the vulnerable code does not execute.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-917 · Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')