CVE-2021-32821

Public Exploit
Regular expression Denial of Service in MooTools

Description

MooTools is a collection of JavaScript utilities for JavaScript developers. All known versions include a CSS selector parser that is vulnerable to Regular Expression Denial of Service (ReDoS). An attack requires that an attacker can inject a string into a CSS selector at runtime, which is quite common with e.g. jQuery CSS selectors. No patches are available for this issue.

Categories

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.43%
Third-Party Advisory github.com
Affected: mootools mootools-core
Published at:
Updated at:

References

Link Tags
https://securitylab.github.com/advisories/GHSL-2020-345-redos-mootools/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-32821?
CVE-2021-32821 has been scored as a medium severity vulnerability.
How to fix CVE-2021-32821?
To fix CVE-2021-32821, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-32821 being actively exploited in the wild?
It is possible that CVE-2021-32821 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-32821?
CVE-2021-32821 affects mootools mootools-core.
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