CVE-2022-35923 (GCVE-0-2022-35923)
Vulnerability from cvelistv5 – Published: 2022-08-02 20:10 – Updated: 2025-04-22 17:45
VLAI
EPSS
VEX
Title
Inefficient Regular Expression Complexity in v8n
Summary
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.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-04-22 15:40 UTC
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
GitHub_M
CNA
References
3 references
| URL | Tags |
|---|---|
| https://github.com/imbrn/v8n/security/advisories/… | x_refsource_CONFIRM |
| https://github.com/imbrn/v8n/commit/92393862156fa… | x_refsource_MISC |
| https://huntr.dev/bounties/2d92f644-593b-43b4-bfd… | x_refsource_MISC |
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