5.3

CVE-2026-9101: mongodb, inc. compass Prototype Pollution

CVSS: 5.3v4.0MediumAnalyzed
Published 20-05-2026Last modified 27-05-2026
Open JSON

Vulnerability summary

CVE-2026-9101 is a medium (CVSS 5.3) Prototype Pollution vulnerability in mongodb, inc. compass. EPSS estimates a 0.45% chance of exploitation in the next 30 days, higher than 37.9% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v4.0 (CVE.org)
EPSS score
0.45%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-05-2026
    PublishedVulnerability first disclosed.
  2. 27-05-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.45%

Chance of exploitation in the next 30 days

Percentile

38%

Versus all other CVEs

30-day change

+0.04 pp

From 0.41% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.45%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Mongodb1 product
  • compass1.36.3 | 1.36.4 | 1.37.0 | 1.38.0 | 1.38.1 | 1.38.2 | 1.39.0 | 1.39.1 | 1.39.2 | 1.39.3 | 1.39.4 | 1.40.0 | 1.40.1 | 1.40.2 | 1.40.3 | 1.40.4 | 1.41.0 | 1.42.0 | 1.42.1 | 1.42.2 | 1.42.3 | 1.42.5 | 1.43.0 | 1.43.1 | 1.43.2 | 1.43.3 | 1.43.4 | 1.43.5 | 1.43.6 | 1.44.0 | 1.44.3 | 1.44.4 | 1.44.5 | 1.44.6 | 1.44.7 | 1.45.0 | 1.45.1 | 1.45.2 | 1.45.3 | 1.45.4 | 1.46.0 | 1.46.1 | 1.46.2 | 1.46.3 | 1.46.4 | 1.46.5 | 1.46.6 | 1.46.7 | 1.46.8 | 1.46.9 | 1.46.10 | 1.46.11 | 1.47.0 | 1.47.1 | 1.48.0 | 1.48.1 | 1.48.2 | 1.49.0 | 1.49.1 | 1.49.2 | 1.49.3 | 1.49.4 | 1.49.5
Mongodb, inc.1 product
  • compass1.36.3 | 1.36.4 | 1.37.0 | 1.38.0 | 1.38.1 | 1.38.2 | 1.39.0 | 1.39.1 | 1.39.2 | 1.39.3 | 1.39.4 | 1.40.0 | 1.40.1 | 1.40.2 | 1.40.3 | 1.40.4 | 1.41.0 | 1.42.0 | 1.42.1 | 1.42.2 | 1.42.3 | 1.42.5 | 1.43.0 | 1.43.1 | 1.43.2 | 1.43.3 | 1.43.4 | 1.43.5 | 1.43.6 | 1.44.0 | 1.44.3 | 1.44.4 | 1.44.5 | 1.44.6 | 1.44.7 | 1.45.0 | 1.45.1 | 1.45.2 | 1.45.3 | 1.45.4 | 1.46.0 | 1.46.1 | 1.46.2 | 1.46.3 | 1.46.4 | 1.46.5 | 1.46.6 | 1.46.7 | 1.46.8 | 1.46.9 | 1.46.10 | 1.46.11 | 1.47.0 | 1.47.1 | 1.48.0 | 1.48.1 | 1.48.2 | 1.49.0 | 1.49.1 | 1.49.2 | 1.49.3 | 1.49.4 | 1.49.5

2 vendors · 2 products

References

1 links