Code Injection in pac-resolver
This affects the package pac-resolver before 5.0.0. This can occur when used with untrusted input, due to unsafe PAC file handling. NOTE: The fix for this vulnerability is applied in the node-degenerator library, a dependency written by the same maintainer.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | degenerator | < 3.0.1 | 3.0.1 |
| npm package | pac-resolver | < 5.0.0 | 5.0.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-23406
- https://github.com/TooTallNate/node-degenerator/commit/9d25bb67d957bc2e5425fea7bf7a58b3fc64ff9e
- https://github.com/TooTallNate/node-degenerator/commit/ccc3445354135398b6eb1a04c7d27c13b833f2d5
- https://github.com/TooTallNate
- https://github.com/TooTallNate/node-pac-resolver/releases/tag/5.0.0
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1568506
- https://snyk.io/vuln/SNYK-JS-PACRESOLVER-1564857
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- npm
- Package
degenerator, pac-resolver- Disclosed
- 02.09.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9j49-mfvp-vmhm - CC BY 4.0
Vulnerability history: pac-resolver
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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