High severity · published Jul 7, 2023
CVE-2021-33796
In MuJS before version 1.1.2, a use-after-free flaw in the regexp source property access may cause denial of service
7.5
CVSS
0.7%
EPSS
No
On KEV
Description
In MuJS before version 1.1.2, a use-after-free flaw in the regexp source property access may cause denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 53% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MU
Mujs · Artifex
before 1.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33796
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33796
Patch
https://github.com/ccxvii/mujs/commit/7ef066a3bb95bf83e7c5be50d859e62e58fe8515
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