CVE-2026-6691
8.6
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
The MongoDB C Driver's Cyrus SASL integration performs unsafe string copying during username canonicalization, enabling a heap buffer overflow before any authentication or network traffic. This may be triggered by passing untrusted input in the username of a MongoDB URI with authMechanism=GSSAPI.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| MongoDB Inc. | MongoDB C Driver | 2.1.0 <= 2.1.2 | affected |
Weaknesses
- CWE-120: CWE-120 Buffer Copy without Checking Size of Input
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
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