CVE-2025-12893

published 2025-11-25

CVE-2025-12893: Clients may successfully perform a TLS handshake with a MongoDB server despite presenting a client certificate not aligning with the documented Extended Key…

Priority P4 30 medium 5.4 CVSS 3.1

AV N AC L PR L UI N S U C L I L A N

Clients may successfully perform a TLS handshake with a MongoDB server despite presenting a client certificate not aligning with the documented Extended Key Usage (EKU) requirements. A certificate that specifies extendedKeyUsage but is missing extendedKeyUsage = clientAuth may still be successfully authenticated via the TLS handshake as a client. This issue is specific to MongoDB servers running on Windows or Apple as the expected validation behavior functions correctly on Linux systems.

Additionally, MongoDB servers may successfully establish egress TLS connections with servers that present server certificates not aligning with the documented Extended Key Usage (EKU) requirements. A certificate that specifies extendedKeyUsage but is missing extendedKeyUsage = serverAuth may still be successfully authenticated via the TLS handshake as a server. This issue is specific to MongoDB servers running on Apple as the expected validation behavior functions correctly on both Linux and Windows systems.

This vulnerability affects MongoDB Server v7.0 versions prior to 7.0.26, MongoDB Server v8.0 versions prior to 8.0.16 and MongoDB Server v8.2 versions prior to 8.2.2

Affected

6 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	>= 7.0.0 < 7.0.26	7.0.26
mongodb	mongodb	>= 8.0.0 < 8.0.16	8.0.16
mongodb	mongodb	>= 8.2.0 < 8.2.2	8.2.2
mongodb_inc	mongodb_server	>= 7.0 < 7.0.26	7.0.26
mongodb_inc	mongodb_server	>= 8.0 < 8.0.16	8.0.16
mongodb_inc	mongodb_server	>= 8.2 < 8.2.2	8.2.2

CVSS provenance

nvd v3.1 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

nvd v4.0 2.3 LOW CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/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

osv 2.3 LOW

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-295