CVE-2025-12735The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with user-defined variables.
Updated under an hour ago ()
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It affects jorenbroekema javascript_expression_evaluator and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 9.8 CRITICAL (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
jorenbroekema javascript_expression_evaluator jorenbroekema:javascript_expression_evaluator | 3.0.0 | NVD |
silentmatt javascript_expression_evaluator silentmatt:javascript_expression_evaluator | through 2.0.2 | NVD |
References
- https://github.com/advisories/GHSA-jc85-fpwf-qm7xthird-party-advisory
- https://github.com/jorenbroekema/expr-evalproduct
- https://github.com/silentmatt/expr-evalproduct
- https://github.com/silentmatt/expr-eval/pull/288issue-tracking, patch
- https://kb.cert.org/vuls/id/263614third-party-advisory
- https://www.npmjs.com/package/expr-evalproduct
- https://www.npmjs.com/package/expr-eval-forkproduct
- https://www.kb.cert.org/vuls/id/263614third-party-advisory
- https://github.com/jorenbroekema/expr-eval/blob/460b820ba01c5aca6c5d84a7d4f1fa5d1913c67b/test/security.jsproduct
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.