Arbitrary code execution via nested function resolution
Published Aug 11, 2026 · Updated Aug 11, 2026
Code injection in Faker before 10.5.0 allows local users to execute arbitrary JavaScript through attacker-controlled helpers.fake templates. fakeEval.resolveProperty dereferences a property on a function result before recursively resolving that nested function, exposing its constructor property. Exploitation requires a consuming application to pass attacker-controlled template text to helpers.fake and a definition function to return another function.
Summary
What happened
Code injection in Faker before 10.5.0 allows local users to execute arbitrary JavaScript through attacker-controlled helpers.fake templates. fakeEval.resolveProperty dereferences a property on a function result before recursively resolving that nested function, exposing its constructor property. Exploitation requires a consuming application to pass attacker-controlled template text to helpers.fake and a definition function to return another function.
The record
- CVE
- CVE-2026-73231
- Published
- Aug 11, 2026
- Updated
- Aug 11, 2026
- Vendor
- faker-js
- Product
- Faker
- Classifications
- CWE-95, T1059.007
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 11, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 10.5.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GHSA-qxc2-j82w-r537 proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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