# CVE-2026-120953: Atlas SQL JDBC Driver <=4.0.0: OIDC discovery endpoints not scheme-validated - attacker-controlled URI dispatched to OS protocol handler

> CVE-2026-120953: Atlas SQL JDBC Driver <=4.0.0: OIDC discovery endpoints not scheme-validated - attacker-controlled URI dispatched to OS protocol handler. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-120953
Last updated: 2026-11-03T20:18:12Z

- Published: 2026-11-03 18:47 UTC · Updated: 2026-11-03 20:18 UTC · Assigner: mongodb
- CVSS: 4.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
- EPSS: 0.24%, 16th percentile (scored 2026-11-04)
- CISA KEV: no
- CWE: CWE-601

## Description

A URI redirection weakness exists in the authentication component of the Atlas SQL JDBC Driver. During an interactive sign-in flow the driver accepts endpoint addresses supplied by the remote endpoint it is pointed at without validating their scheme, and passes the resulting address to the local default protocol handler. An unauthenticated remote party that controls the endpoint a user elects to connect to may cause an address of its choosing to be opened on the user's system; user interaction is required.

## Affected vendors and products

- MongoDB: Atlas SQL JDBC 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-2026-120953)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-120953)
- [https://jira.mongodb.org/browse/SQL-3539](https://jira.mongodb.org/browse/SQL-3539)
- [https://www.mongodb.com/docs/sql-interface/changelog/](https://www.mongodb.com/docs/sql-interface/changelog/)

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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-2026-120953 · Markdown: https://rewindex.com/cve/CVE-2026-120953.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-120953 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-05T15:28:16.206Z