github.com
https://github.com/mongodb/mongo-go-driver CVE-2026-2303
MEDIUM
Heap Out-of-Bounds Read in Go Driver GSSAPI C Wrappers enables application crash or information leak
Record summary
CVE-2026-2303 has a selected CVSS score of 6.9 (medium).
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.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationNone
AutomatableNo
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Feb 11, 2026 · Source: CVE List
Affected products and versions
3| Product | Source | Version range | Status |
|---|---|---|---|
MongoDB Go DriverBrowse MongoDB Inc / MongoDB Go DriverDefault status: unaffected | CVE List | 1.0.0 to < 1.17.7 | affected |
| 2.0.0 to < 2.4.2 | affected | ||
go.mongodb.org/mongo-driverBrowse Go / go.mongodb.org/mongo-driver | GitHub Advisory | Before 1.17.7 · Fixed in 1.17.7 | affected |
go.mongodb.org/mongo-driver/v2Browse Go / go.mongodb.org/mongo-driver/v2 | GitHub Advisory | Before 2.4.2 · Fixed in 2.4.2 | affected |
References
3jira.mongodb.org
https://jira.mongodb.org/browse/GODRIVER-3770 nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-2303