5.4

CVE-2026-103965: mongodb mongodb server Code Injection

CVSS: 5.4v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-103965
Published 13-10-2026Last modified 13-10-2026
Open JSON

Vulnerability summary

CVE-2026-103965 is a medium (CVSS 5.4) Code Injection vulnerability in mongodb mongodb server. EPSS estimates a 0.15% chance of exploitation in the next 30 days, higher than 3.7% of scored vulnerabilities.

Overall risk
22/100
0100
Low · default modelHow is this calculated?
CVSS score
5.4/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.15%
0%100%
Low · Change unavailable
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 13-10-2026
    PublishedVulnerability first disclosed.
  2. 13-10-2026
    Last modifiedVulnerability information updated.

Description

An issue in MongoDB Server's aggregation framework can cause certain constant values to be handled incorrectly during internal query rewriting. Under certain conditions, an authenticated user with read access may receive field values in aggregation output that the query did not intend to return.

CVSS metrics

6 scores · 3 sources · 2 versions

EPSS trend

Probability

0.15%

Chance of exploitation in the next 30 days

Percentile

4%

Versus all other CVEs

30-day change

Change unavailable

Change unavailable

14-10-202619-10-2026
EPSS score
0.15%

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
  • mongodb server≥ 8.3.0, < 8.3.13 | ≥ 8.0, < 8.0.34 | ≥ 7.0, < 7.0.45 | ≥ 9.0, < 9.0.4
Ubuntu1 product
  • mongodbAll versions (No fix recorded)

2 vendors · 2 products

References

3 links