CVE-2020-26302 describes a Regular Expression Denial of Service (ReDoS) vulnerability in is.js versions 0.9.0 and prior, a general-purpose check library. This flaw stems from inefficient regular expressions, specifically one used for URL validation, which can lead to an infinite loop when processing a specially crafted malicious string. The vulnerability carries a CVSS score of 7.5 (HIGH), indicating that it can be exploited remotely with low attack complexity, resulting in a high availability impact (denial of service). There is no known patch for this issue, and currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 0.9.0CPE matchmatch criteria | cpe:2.3:a:is.js_project:is.js:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.