The mongo-go-driver repository contains CGo bindings for GSSAPI (Kerberos) authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not guaranteed to be null-terminated or have extra padding, this results in reading one byte past the allocated heap buffer.
History

Tue, 10 Feb 2026 19:45:00 +0000

Type Values Removed Values Added
Description The mongo-go-driver repository contains CGo bindings for GSSAPI (Kerberos) authentication on Linux and macOS. The C wrapper implementation contains a heap out-of-bounds read vulnerability due to incorrect assumptions about string termination in the GSSAPI standard. Since GSSAPI buffers are not guaranteed to be null-terminated or have extra padding, this results in reading one byte past the allocated heap buffer.
Title Heap Out-of-Bounds Read in Go Driver GSSAPI C Wrappers enables application crash or information leak
Weaknesses CWE-183
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-02-10T19:03:06.737Z

Reserved: 2026-02-10T18:55:27.871Z

Link: CVE-2026-2303

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-10T20:17:00.757

Modified: 2026-02-10T21:51:48.077

Link: CVE-2026-2303

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.