CVEvulnerability
CVE-2022-35923
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2022-08-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-1333, CWE-400
Description
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.
Affected configurations
• v8n project v8n (< 1.5.1)
Related
References
- https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9 Patch, Third Party Advisory
- https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9 Third Party Advisory
- https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/ Exploit, Third Party Advisory
- https://github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9 Patch, Third Party Advisory
- https://github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9 Third Party Advisory
- https://huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/ Exploit, Third Party Advisory