8.6

CVE-2026-93758: mongodb inc. mongoid

CVSS: 8.6v4.0HighAnalyzed
Published 18-09-2026Last modified 21-09-2026
Open JSON

Vulnerability summary

CVE-2026-93758 is a high (CVSS 8.6) vulnerability in mongodb inc. mongoid. EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 27.8% of scored vulnerabilities.

Overall risk
34/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.6/10
010
High · v4.0 (CVE.org)
EPSS score
0.36%
0%100%
Low · +0.15 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 18-09-2026
    PublishedVulnerability first disclosed.
  2. 21-09-2026
    Last modifiedVulnerability information updated.

Description

An insecure direct object reference in the nested attributes handling of the Mongoid object-document mapper may allow a user with basic application privileges to reference a record identifier that is not their own. Processing such a request can cause that record to be looked up without the usual ownership or scoping restrictions, then updated and linked to the requesting user's own record. This may result in unintended disclosure and unauthorized modification of data belonging to other users of the application.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.36%

Chance of exploitation in the next 30 days

Percentile

28%

Versus all other CVEs

30-day change

+0.15 pp

From 0.21% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.36%

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
  • mongoid≥ 8.0.0, < 8.0.12 | ≥ 8.1.0, < 8.1.13 | ≥ 9.0.0, < 9.0.12 | 9.1.0
Mongodb inc.1 product
  • mongoid9.1.0 | ≥ 9.0.0, ≤ 9.0.11 | ≥ 8.1.0, ≤ 8.1.12 | ≥ 8.0.0, ≤ 8.0.12

2 vendors · 2 products

References

1 links