es5-ext vulnerable to Regular Expression Denial of Service in `function#copy` and `function#toStringTokens`
Impact
Passing functions with very long names or complex default argument names into function#copy orfunction#toStringTokens may put script to stall
Patches
Fixed with https://github.com/medikoo/es5-ext/commit/3551cdd7b2db08b1632841f819d008757d28e8e2 and https://github.com/medikoo/es5-ext/commit/a52e95736690ad1d465ebcd9791d54570e294602 Published with v0.10.63
Workarounds
No real workaround aside of refraining from using above utilities.
References
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | es5-ext | >= 0.10.0, < 0.10.63 | 0.10.63 |
References
- https://github.com/medikoo/es5-ext/security/advisories/GHSA-4gmj-3p3h-gm8h
- https://nvd.nist.gov/vuln/detail/CVE-2024-27088
- https://github.com/medikoo/es5-ext/issues/201
- https://github.com/medikoo/es5-ext/commit/3551cdd7b2db08b1632841f819d008757d28e8e2
- https://github.com/medikoo/es5-ext/commit/a52e95736690ad1d465ebcd9791d54570e294602
- https://github.com/medikoo/es5-ext
- Weakness (CWE)
CWE-1333- Platform
- npm
- Package
es5-ext- Disclosed
- 26.02.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4gmj-3p3h-gm8h - CC BY 4.0
Vulnerability history: es5-ext
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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