CVE-2026-115193 Mautic - Stored XSS

Mautic contains a stored XSS caused by unsanitized rendering of HTML-type custom contact fields in the contact detail view, letting attackers execute scripts in administrators' browsers, exploit requires ability to write to custom fields.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Published
26 October 2026
Updated
27 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version of Mautic that includes sanitization for custom contact fields.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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