# CVE-2026-106428: Out-of-bounds read in SCRAM response parsing in MongoDB C Driver

> CVE-2026-106428: Out-of-bounds read in SCRAM response parsing in MongoDB C Driver. CVSS 3.7 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-106428
Last updated: 2026-10-08T20:49:23Z

- Published: 2026-10-08 18:35 UTC · Updated: 2026-10-08 20:49 UTC · Assigner: mongodb
- CVSS: 3.7 (CVSS 3.1) · Severity: Low · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.24%, 15th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-125

## 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.

## Affected vendors and products

- MongoDB: C Driver

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-106428)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-106428)
- [https://jira.mongodb.org/browse/CDRIVER-6370](https://jira.mongodb.org/browse/CDRIVER-6370)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-106428 · Markdown: https://rewindex.com/cve/CVE-2026-106428.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-106428 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:13:04.364Z