# CVE-2026-9101: Prototype pollution in csv parsing

> CVE-2026-9101: Prototype pollution in csv parsing. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-9101
Last updated: 2026-09-24T17:29:21Z

- Published: 2026-05-20 16:18 UTC · Updated: 2026-09-24 17:29 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: 0.41%, 35th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1321

## Description

Prototype pollution in csv parsing logic during import can lead to untrusted file paths (but not arguments) entering shell.openExternal after specific user behavior leading to "1-click" command execution.

## Affected vendors and products

- MongoDB, Inc.: Compass

## Tracked companies

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

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-9101)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-9101)
- [https://jira.mongodb.org/browse/COMPASS-10657](https://jira.mongodb.org/browse/COMPASS-10657)

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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-2026-9101 · Markdown: https://rewindex.com/cve/CVE-2026-9101.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-9101 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:05:14.877Z