CVE-2026-115190
Summary
| CVE | CVE-2026-115190 |
|---|---|
| State | PUBLISHED |
| Assigner | Mautic |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-10-26 14:16:30 UTC |
| Updated | 2026-10-26 16:17:16 UTC |
| Description | An insecure deserialization (PHP object injection) vulnerability exists in Mautic's handling of segment filters and custom field properties. Several code paths that read these stored values from the database deserialize them without restricting which PHP classes may be instantiated, instead of using Mautic's safe deserialization helper. An attacker who is able to store a crafted serialized value in these segment filter or custom field properties can cause arbitrary PHP objects to be instantiated when Mautic later processes the data, for example during segment evaluation, contact export, or custom field API requests. Combined with gadget chains available in Mautic's dependencies, this could allow an attacker to execute arbitrary code on the server, read, modify, or delete data stored in the Mautic instance, including contact data, and affect its availability. Exploitation requires high privileges or an existing ability to write to the affected stored data. |
Risk And Classification
Primary CVSS: v3.1 8 HIGH from [email protected]
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Problem Types: CWE-502 | CWE-502 CWE-502 Deserialization of Untrusted Data
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8 | HIGH | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 8 | HIGH | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
HighUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
There are no known software configurations currently associated with this CVE in NVD or the CVE Program record.
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/mautic/mautic/security/advisories/GHSA-5r63-8h35-j3mw | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: @tikket1 (en)
CNA: Patryk Gruszka (@patrykgruszka) (en)
CNA: John Linhart (@escopecz) (en)
CNA: Leuchtfeuer Digital Marketing (@Leuchtfeuer) (en)
Additional Advisory Data
Workarounds
CNA: There are no official workarounds. To reduce the risk without upgrading, restrict administrative access (including permissions to manage segments and custom fields, and API access) to trusted users, and make sure no untrusted party has write access to the Mautic database.
There are currently no legacy QID mappings associated with this CVE.