CVE-2020-26302CWE-400

is.js is a general-purpose check library

High · published December 23, 2022

CVSS v3.1
7.5
EPSS
1%
Percentile
59.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00891 · 59.0th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2022-12-23T23:03Z
EPSS history
Timeline
  • 23 DEC 23:03Z
    is.js is a general-purpose check library
    cvelistv5