CVSS 4.0
6.9 mediumCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:NCVE-2026-2303
Medium (6.9). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in go.mongodb.org/mongo-driver 1.17.7.
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.
Severity
CVSS 3.1
6.5 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 24% of CVEs (scores of 2026-10-31)
- CWE
- CWE-183
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cp6g-7hqx-qxhp | Go | go.mongodb.org/mongo-driver | <1.17.7 | 1.17.7 |
| GHSA-cp6g-7hqx-qxhp | Go | go.mongodb.org/mongo-driver/v2 | <2.4.2 | 2.4.2 |
| GO-2026-5327 | Go | go.mongodb.org/mongo-driver | <1.17.7 | 1.17.7 |
| GO-2026-5327 | Go | go.mongodb.org/mongo-driver/v2 | <2.4.2 | 2.4.2 |