Critical severity · published Sep 17, 2024
CVE-2021-27915
XSS Cross-site Scripting Stored (XSS) - Description field
9.0
CVSS
0.6%
EPSS
No
On KEV
Description
Prior to the patched version, there is an XSS vulnerability in the description fields within the Mautic application which could be exploited by a logged in user of Mautic with the appropriate permissions.
This could lead to the user having elevated access to the system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 50% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
Mautic · Mautic
>= 1.0.0-beta2 through <= 4.4.11 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27915
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27915
Vendor Advisory
https://github.com/mautic/mautic/security/advisories/GHSA-2rc5-2755-v422
More from Mautic
9.8
CVE-2018-8092
Mautic before 2.13.0 allows CSV injection
9.1
CVE-2022-25769
Improper regex in htaccess file
9.0
CVE-2025-13828
Mautic user without privileged access to the Marketplace can install and uninstall composer packages
9.0
CVE-2020-35129
Mautic before 3.2.4 is affected by stored XSS
8.8
CVE-2026-3105
SQL Injection in Contact Activity API Sorting