CVE-2026-88035
NVD: A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. NVD: A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. NVD: Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.
5.7 Severity
MEDIUM EPSS
0.0010 (1) KEV
-
Source-published summary
NVD: A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. NVD: A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. NVD: Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.
Possible impact
This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.
Affected context
vendor/product: mongodb / c_driver
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
This medium severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for defensive exposure review.; CVSS 5.7 (MEDIUM); EPSS percentile 1; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, Vendor Advisory.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
exposure unknown
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / Vendor Advisory description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.