CVE-2021-27915
XSS Cross-site Scripting Stored (XSS) - Description field
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
XSS Cross-site Scripting Stored (XSS) - Description field
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.
- Record
CVE-2021-27915- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-80
- Updated
- 2026-11-02
EUVDEUVD-2024-1069
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.
- Record
EUVD-2024-1069- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2rc5-2755-v422
Mautic vulnerable to stored cross-site scripting in description field
Impact
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.
Patches
Update to 4.4.12
Workarounds
None
References
- https://owasp.org/www-project-top-ten/2017/A7_2017-Cross-Site_Scripting_(XSS)
- https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/07-Input_Validation_Testing/02-Testing_for_Stored_Cross_Site_Scripting
If you have any questions or comments about this advisory:
Email us at [email protected]
- Record
GHSA-2rc5-2755-v422- CVSS 4.0
- 8.6 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-79, CWE-80
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-27915- CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L - CVSS 3.1
- 9.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Weakness
- CWE-80, CWE-79
- Updated
- 2026-11-02
OSV
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.
- Record
CVE-2021-27915- CVSS 3.1
- 9.0 Critical
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-2rc5-2755-v422
Mautic vulnerable to stored cross-site scripting in description field
Impact
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.
Patches
Update to 4.4.12
Workarounds
None
References
- https://owasp.org/www-project-top-ten/2017/A7_2017-Cross-Site_Scripting_(XSS)
- https://owasp.org/www-project-web-security-testing-guide/latest/4-Web_Application_Security_Testing/07-Input_Validation_Testing/02-Testing_for_Stored_Cross_Site_Scripting
If you have any questions or comments about this advisory:
Email us at [email protected]
- Record
GHSA-2rc5-2755-v422- CVSS 4.0
- 8.6 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N - CVSS 3.1
- 7.6 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L - Weakness
- CWE-79, CWE-80
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mautic/corePackagist |
1.0.0-beta2 up to 4.4.12 | 4.4.12 |
mautic/corePackagist |
1.0.0-beta2 up to 4.4.12, plus listed versions 1.0.01.0.0-beta31.0.0-beta41.0.0-rc11.0.0-rc2 Show 45 moreShow less1.0.0-rc31.0.0-rc41.0.11.0.21.0.31.0.41.0.51.1.01.1.11.1.21.1.31.2.01.2.0-beta11.2.11.2.21.2.31.2.41.3.01.3.11.4.01.4.12.0.02.0.12.1.02.1.12.10.02.10.0-beta2.10.12.11.02.11.0-beta2.12.02.12.0-beta2.12.12.12.1-beta2.12.22.12.2-beta2.13.02.13.0-beta2.13.12.14.02.14.0-beta2.14.12.14.1-beta2.14.22.14.2-beta |
4.4.12 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-27915 is a high vulnerability (CVSS 7.6) in Acquia Mautic, published April 11, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.62%, the 49th percentile. Fixed in mautic/core 4.4.12.
References
Left out here: 97 versions. The JSON record has them.