8.7

CVE-2026-93761: mongodb inc. mongoid

CVSS: 8.7v4.0HighAnalyzed
Published 18-09-2026Last modified 19-09-2026
Open JSON

Vulnerability summary

CVE-2026-93761 is a high (CVSS 8.7) vulnerability in mongodb inc. mongoid. EPSS estimates a 0.46% chance of exploitation in the next 30 days, higher than 38.5% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.7/10
010
High · v4.0 (CVE.org)
EPSS score
0.46%
0%100%
Low · +0.19 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. 19-09-2026
    Last modifiedVulnerability information updated.

Description

An inefficient regular expression complexity issue in the in-memory query evaluation component of the Mongoid library may allow an unauthenticated party to cause excessive processing within an embedding application process. Applications that place user-supplied text into a pattern-matching query condition on an embedded association may become unresponsive.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.46%

Chance of exploitation in the next 30 days

Percentile

39%

Versus all other CVEs

30-day change

+0.19 pp

From 0.27% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.46%

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, < 8.0.13 | ≥ 8.1.0, < 8.1.13 | ≥ 9.0.0, < 9.0.12 | 9.1.0
Mongodb inc.1 product
  • mongoid≥ 7.2.0, ≤ 7.2.6 | ≥ 7.3.0, ≤ 7.3.5 | ≥ 7.4.0, ≤ 7.4.3 | ≥ 7.5.0, ≤ 7.5.4 | ≥ 7.6.0, ≤ 7.6.1 | ≥ 8.0.0, ≤ 8.0.12 | ≥ 8.1.0, ≤ 8.1.12 | ≥ 9.0.0, ≤ 9.0.11 | 9.1.0

2 vendors · 2 products

References

1 links