CVE-2026-88035
đļ mediumSummary
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. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.
CVSS Score
4.7
Medium
EPSS Score
0.1
Exploit Probability
Published Date
2026-09-10
First Seen: 2026-09-11
đ Relative Risk Intelligence
This CVE is Lower Risk - more severe than 13.5% of all 365,968 vulnerabilities in our database.
#316,658
Below average severity
Severity Percentile
đ¯ CISA SSVC Assessment Updated: Sep 10, 2026
đ Exploitation Status
None
No known exploits
âī¸ Automatable
NO
Requires human interaction
đĨ Technical Impact
Partial
Limited system impact
SSVC data provided by
CISA
Last Modified
2026-09-16
Source
NVD đ
CVSS Vector 3.1
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Vector 4.0
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CWE IDs (Weakness Types)