GHSA-q9v2-7m5w-4693
Suggest an improvement- Source
- https://github.com/advisories/GHSA-q9v2-7m5w-4693
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-q9v2-7m5w-4693/GHSA-q9v2-7m5w-4693.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-q9v2-7m5w-4693
- Aliases
-
- CVE-2026-12866
- Downstream
- Published
- 2026-06-23T06:30:41Z
- Modified
- 2026-09-22T14:45:10Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- expr-eval vulnerable to Code Execution
- Details
-
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.
- Database specific
{ "cwe_ids": [ "CWE-94" ], "github_reviewed": true, "github_reviewed_at": "2026-09-22T14:40:52Z", "nvd_published_at": "2026-06-23T05:17:03Z", "severity": "CRITICAL" }- References
-
- https://nvd.nist.gov/vuln/detail/CVE-2026-12866
- https://github.com/silentmatt/expr-eval/issues/292
- https://github.com/silentmatt/expr-eval
- https://github.com/silentmatt/expr-eval/blob/master/src/expression.js#L55
- https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-17662018
- https://security.snyk.io/vuln/SNYK-JS-EXPREVAL-15054690
Affected packages
npm / expr-eval
Package
- Name
- expr-eval
- View open source insights on deps.dev
- Purl
- pkg:npm/expr-eval
Maven / org.webjars.npm:expr-eval
Package
- Name
- org.webjars.npm:expr-eval
- View open source insights on deps.dev
- Purl
- pkg:maven/org.webjars.npm/expr-eval