# CVE-2026-2303

## Summary

- **CVE ID:** CVE-2026-2303
- **Severity:** MEDIUM
- **CVSS Score:** 6.9 (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)
- **CWE:** CWE-183
- **Published:** Feb 10, 2026
- **Last Modified:** Mar 12, 2026

## 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.

## Affected Products

- MongoDB Inc — MongoDB Go Driver (1.0.0)
- MongoDB Inc — MongoDB Go Driver (2.0.0)

## References

- [CNA](https://jira.mongodb.org/browse/GODRIVER-3770)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.23%
- **EPSS Percentile:** 14.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._