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.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2022-7187 | 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. |
Github GHSA |
GHSA-xrx9-gj26-5wx9 | v8n vulnerable to Inefficient Regular Expression Complexity |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Tue, 22 Apr 2025 18:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-04-22T17:45:31.262Z
Reserved: 2022-07-15T00:00:00.000Z
Link: CVE-2022-35923
Updated: 2024-08-03T09:51:58.523Z
Status : Modified
Published: 2022-08-02T20:15:09.947
Modified: 2024-11-21T07:11:58.283
Link: CVE-2022-35923
No data.
OpenCVE Enrichment
No data.
EUVD
Github GHSA