CVE-2022-35923 — Inefficient Regular Expression Complexity in v8n
v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` reg…
Published: 2022-08-02 · CVSS: 7.5 · CVSS 3.1
v8n is a javascript validation library. Versions of v8n prior to 1.5.1 were found to have an inefficient regular expression complexity in the `lowercase()` and `uppercase()` regex which could lead to a denial of service attack. In testing of the `lowercase()` function a payload of 'a' + 'a'.repeat(i) + 'A' with 32 leading characters took 29443 ms to execute. The same issue happens with uppercase(). Users are advised to upgrade. There are no known workarounds for this issue.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7