CVE-2022-35923

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.

• CWE-400
• CWE-1333

• https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9Patch, Third Party Advisory
• https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9Third Party Advisory
• https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/Exploit, Third Party Advisory
• https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9Patch, Third Party Advisory
• https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9Third Party Advisory
• https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/Exploit, Third Party Advisory

Published

Aug 2, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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