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CVE-2026-6691

MongoDB C Driver Cyrus SASL Canonicalization Buffer Overflow PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
MongoDB Inc. / MongoDB C Driveraffected 2.1.0 through 2.1.2

CWE

CWE-120

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.