MongoDB Server up to 8.0.27/8.3.6 Proxy Protocol privileges management

Summaryinfo

A vulnerability identified as problematic has been detected in MongoDB Server up to 8.0.27/8.3.6. This issue affects some unknown processing of the component Proxy Protocol. Performing a manipulation results in privileges management. This vulnerability is cataloged as CVE-2026-13067. The attack must be initiated from a local position. There is no exploit available.

Detailsinfo

A vulnerability classified as problematic has been found in MongoDB Server up to 8.0.27/8.3.6. This affects some unknown functionality of the component Proxy Protocol. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

When PROXY protocol v2 is used on the Unix domain socket path, roles derived from X.509 client certificates may not be validated against the configured tlsCATrusts allow-list. This can result in unintended role assignments following MONGODB-X509 authentication. Affected scenarios require local access to the proxy Unix domain socket and a valid X.509 certificate issued by a trusted certificate authority.

It is possible to read the advisory at jira.mongodb.org. This vulnerability is uniquely identified as CVE-2026-13067 since 06/23/2026. The exploitability is told to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version 8.0.28 or 8.3.7 eliminates this vulnerability.

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Productinfo

Type

• Database Software

Vendor

• MongoDB

Name

• Server

Version

• 8.0.0
• 8.0.1
• 8.0.2
• 8.0.3
• 8.0.4
• 8.0.5
• 8.0.6
• 8.0.7
• 8.0.8
• 8.0.9
• 8.0.10
• 8.0.11
• 8.0.12
• 8.0.13
• 8.0.14
• 8.0.15
• 8.0.16
• 8.0.17
• 8.0.18
• 8.0.19
• 8.0.20
• 8.0.21
• 8.0.22
• 8.0.23
• 8.0.24
• 8.0.25
• 8.0.26
• 8.0.27
• 8.3.0
• 8.3.1
• 8.3.2
• 8.3.3
• 8.3.4
• 8.3.5
• 8.3.6

License

• open-source

CPE 2.3info

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CPE 2.2info

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