CVE-2026-13067: 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…

PriorityP431medium6.3CVSS 3.1

AVLACHPRLUINSUCHIHAN

EPSS

0.10%

0.7th percentile

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	>= 8.0.0 < 8.0.28	8.0.28
mongodb	mongodb	>= 8.3.0 < 8.3.7	8.3.7
mongodb	mongodb_server	>= 8.0 < 8.0.28	8.0.28
mongodb	mongodb_server	>= 8.3.0 < 8.3.7	8.3.7

CVSS provenance

nvdv3.16.3MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

nvdv4.07.2HIGHCVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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