High severity7.5NVD Advisory· Published Aug 2, 2022· Updated Jun 17, 2026
CVE-2022-35923
CVE-2022-35923
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.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
v8nnpm | < 1.5.1 | 1.5.1 |
Affected products
2Patches
Vulnerability mechanics
References
6- github.com/imbrn/v8n/commit/92393862156fad190c05ec3f6e2bc73308dcd2f9nvdPatchThird Party AdvisoryWEB
- huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609/nvdExploitThird Party Advisory
- github.com/advisories/GHSA-xrx9-gj26-5wx9ghsaADVISORY
- github.com/imbrn/v8n/security/advisories/GHSA-xrx9-gj26-5wx9nvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2022-35923ghsaADVISORY
- huntr.dev/bounties/2d92f644-593b-43b4-bfd1-c8042ac60609ghsaWEB
News mentions
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