VDB-178008 · CVE-2021-32821 · GHSL-2020-345

mootools incorrect regex

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in mootools. The affected element is an unknown function. The manipulation results in incorrect regex. This vulnerability was named CVE-2021-32821. In addition, an exploit is available. It is advisable to use an alternative in place of the affected component.

Detailsinfo

A vulnerability was found in mootools (unknown version). It has been classified as critical. Affected is an unknown code block. The manipulation with an unknown input leads to a incorrect regex vulnerability. CWE is classifying the issue as CWE-185. The product specifies a regular expression in a way that causes data to be improperly matched or compared. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 07/07/2021 as GHSL-2020-345. The advisory is shared for download at securitylab.github.com. This vulnerability is traded as CVE-2021-32821. Technical details are unknown but a public exploit is available.

The exploit is shared for download at securitylab.github.com. It is declared as proof-of-concept.

The problem might be mitigated by replacing the product with as an alternative.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-0554). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

mootools

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Incorrect regex
CWE: CWE-185 / CWE-697
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Alternative
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/12/2021 🔍
07/07/2021 +56 days 🔍
07/07/2021 +0 days 🔍
07/05/2025 +1459 days 🔍

Sourcesinfo

Advisory: GHSL-2020-345
Status: Confirmed

CVE: CVE-2021-32821 (🔍)
GCVE (CVE): GCVE-0-2021-32821
GCVE (VulDB): GCVE-100-178008
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 07/07/2021 08:21
Updated: 07/05/2025 04:02
Changes: 07/07/2021 08:21 (38), 07/10/2021 02:36 (1), 07/05/2025 04:02 (15)
Complete: 🔍
Submitter: misc
Cache ID: 216::103

Submitinfo

Accepted

Submit #15848: Regular expression Denial of Service in mootools (by misc)

VulDB is the best source for vulnerability data and more expert information about this specific topic.