How severe is CVE-2026-9101?

CVE-2026-9101 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2026-9101 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-9101?

CVE-2026-9101 primarily affects Mongodb Compass. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-9101?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-9101 have an EU (EUVD) identifier?

Yes. CVE-2026-9101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31127.

When was CVE-2026-9101 published?

CVE-2026-9101 was published on 2026-05-20 and last updated on 2026-09-24.

CVE-2026-9101

CVE-2026-9101 is a medium-severity vulnerability in Mongodb Compass with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v4: 5.3
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-31127
Weakness: CWE-1321
Affected product: Mongodb Compass
Published: 2026-05-20
Last modified: 2026-09-24

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.

Frequently asked questions

What is CVE-2026-9101?: 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.
How severe is CVE-2026-9101?: CVE-2026-9101 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2026-9101 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-9101?: CVE-2026-9101 primarily affects Mongodb Compass. In total, 63 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-9101?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-9101 have an EU (EUVD) identifier?: Yes. CVE-2026-9101 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-31127.
When was CVE-2026-9101 published?: CVE-2026-9101 was published on 2026-05-20 and last updated on 2026-09-24.

References

https://jira.mongodb.org/browse/COMPASS-10657

Affected products (63)

cpe:2.3:a:mongodb:compass:1.36.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.36.4:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.37.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.38.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.38.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.38.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.39.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.39.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.39.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.39.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.39.4:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.40.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.40.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.40.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.40.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.40.4:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.41.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.42.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.42.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.42.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.42.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.42.5:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.4:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.5:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.43.6:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.4:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.5:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.6:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.44.7:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.45.0:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.45.1:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.45.2:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.45.3:*:*:*:*:*:*:*
cpe:2.3:a:mongodb:compass:1.45.4:*:*:*:*:*:*:*

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