7.3

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2021-27917

GHSA ID

GHSA-xpc5-rr39-v8v2

EPSS Score

0.38823%

CWE

CWE-79

Published

9/18/2024

Updated

9/27/2024

KEV Status

Technology

PHP

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2021-27917

CVE-2021-27917: Mautic has an XSS in contact tracking and page hits report

Summary

Prior to this patch, a stored XSS vulnerability existed in the contact tracking and page hits report.

Patches

Please update to 4.4.13 or 5.1.1 or later.

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 security@mautic.org

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2021-27917

CVE-2021-27917:

7.3

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2021-27917

GHSA ID

GHSA-xpc5-rr39-v8v2

EPSS Score

0.38823%

CWE

CWE-79

Published

9/18/2024

Updated

9/27/2024

KEV Status

Technology

PHP

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
mautic/core-lib	composer	>= 1.0.0-beta4, < 4.4.13	4.4.13
mautic/core-lib	composer	>= 5.0.0-alpha, < 5.1.1	5.1.1
mautic/core	composer	>= 1.0.0-beta4, < 4.4.13	4.4.13
mautic/core	composer	>= 5.0.0-alpha, < 5.1.1	5.1.1

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The vulnerability stems from:

Insecure HTML injection via .html() in JS files (1a.content.js and 9.modals.js), where user-controlled input (like page URLs/module items) was rendered without proper escaping.
The Twig template's use of |raw filter on event.details (later removed in patch) could expose serialized XSS payloads. The commit patches explicitly replace .html() with .text() in JS and remove dangerous raw output in Twig, confirming these were attack vectors. The added XSS test in PublicControllerFunctionalTest.php further validates the contact tracking/page hits report as the exploitation path.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.

7.3

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2021-27917: Mautic has an XSS in contact tracking and page hits report

Summary

Patches

Workarounds

References

CVE-2021-27917:

7.3

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

7.3

7.3

CVE-2021-27917: Mautic has an XSS in contact tracking and page hits report

Summary

Patches

Workarounds

References

Basic Information

Basic Information

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Technical Details

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI