v8n vulnerable to Inefficient Regular Expression Complexity
Impact
Inefficient regular expression complexity of lowercase() and uppercase() regex could lead to a denial of service attack. With a formed payload 'a' + 'a'.repeat(i) + 'A', only 32 characters payload could take 29443 ms time execution when testing lowercase(). The same issue happens with uppercase().
Patches
v1.5.1
References
huntr.dev report Regular Expression Denial of Service (ReDoS) and Catastrophic Backtracking
For more information
If you have any questions or comments about this advisory:
- Open an issue in v8n issues list
- Email us at brunodev02221@gmail.com
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | v8n | < 1.5.1 | 1.5.1 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-1333, CWE-400- Platform
- npm
- Package
v8n- Disclosed
- 07.10.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-xrx9-gj26-5wx9 - CC BY 4.0
Vulnerability history: v8n
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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