CVE-2025-12735critical

CVE-2025-12735: critical vulnerability in silentmatt expr-eval

CVE-2025-12735

Published · Updated

48Vexday Risk Score

No sign of exploitation. It has a public proof of concept.

ssvc Attendcvss 9.8epss 1.8%
from disclosure to weapon15 days
Published on NVDNov 5
1st PoC+15d
exploitation probability
1.8%top 23% of all CVEs
observed exploitation
nono source reports it
4 public exploit(s)
The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with user-defined variables. However, due to insufficient input validation, an attacker can pass a crafted context object or use MEMBER of the context object into the evaluate() function and trigger arbitrary code execution.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
expr-eval-fork · expr-eval-forksilentmatt · expr-eval
public PoCs found — 4
githubgithub.com/alecasg555/safe-expr-eval★ 4githubgithub.com/alnashawatirohwederb2167-max/cve-2025-12735-expr-eval-rce★ 0githubgithub.com/AN5I/cve-2025-12735-expr-eval-rce★ 0cve_referencegithub.com/jorenbroekema/expr-eval/blob/460b820ba01c5aca6c5d84a7d4f1fa5d1913c67b/test/security.jsunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — silentmatt expr-eval

In the same product, most dangerous first.

CVE-2025-13204HIGHCVE-2025-13204EPSS 0.5%
References
https://github.com/advisories/GHSA-jc85-fpwf-qm7xhttps://github.com/jorenbroekema/expr-evalhttps://github.com/jorenbroekema/expr-eval/blob/460b820ba01c5aca6c5d84a7d4f1fa5d1913c67b/test/security.jshttps://github.com/silentmatt/expr-evalhttps://github.com/silentmatt/expr-eval/pull/288https://kb.cert.org/vuls/id/263614https://www.kb.cert.org/vuls/id/263614https://www.npmjs.com/package/expr-evalhttps://www.npmjs.com/package/expr-eval-fork