CVEvulnerability

CVE-2020-26302

7.5 HIGH Published 2022-12-22 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-12-22
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1333, CWE-400

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.

Affected configurations

• is.js project is.js (<= 0.9.0)

Related

Weakness · CWE (2)

  • CWE-1333 Inefficient Regular Expression Complexity weakness
  • CWE-400 Uncontrolled Resource Consumption weakness

References