Low severity · published Oct 8, 2026
CVE-2026-106428
Out-of-bounds read in SCRAM response parsing in MongoDB C Driver
3.7
CVSS
0.2%
EPSS
No
On KEV
Description
An out-of-bounds read in SCRAM authentication response parsing in the MongoDB C Driver can read one byte beyond a fixed-size buffer when processing a malformed server-final message. A server or network intermediary able to provide this message before server-signature verification can cause the application using the driver to terminate. The extra byte is not returned through the protocol.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
1.1.0 before 1.30.13; 2.0.0 before 2.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-106428
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-106428
jira.mongodb.org
https://jira.mongodb.org/browse/CDRIVER-6370
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