arasatasaygin/is.js · Security
is_js vulnerable to Regular Expression Denial of Service
- GHSA ID
- GHSA-pvrw-g6fx-mcx2
- CVE ID
- CVE-2020-26302
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 7.5 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
is.js is a general-purpose check library. Versions 0.9.0 and prior contain one or more regular expressions that are vulnerable to Regular Expression Denial of Service (ReDoS). is.js uses a regex copy-pasted from a gist to validate URLs. Trying to validate a malicious string can cause the regex to loop "forever." This vulnerability was found using a CodeQL query which identifies inefficient regular expressions. is.js has no patch for this issue.
CWEs
- CWE-400 · Uncontrolled Resource Consumption
- CWE-1333 · Inefficient Regular Expression Complexity