8.8

CVE-2026-8053: mongodb inc mongodb server Out-of-bounds Write

CVSS: 8.8v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-8053
Published 12-05-2026Last modified 14-05-2026
Open JSON

Vulnerability summary

CVE-2026-8053 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in mongodb inc mongodb server. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.6% of scored vulnerabilities.

Overall risk
35/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.66%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 12-05-2026
    PublishedVulnerability first disclosed.
  2. 14-05-2026
    Last modifiedVulnerability information updated.

Description

An issue in MongoDB Server's time-series collection implementation allows an authenticated user with database write privileges to trigger an out-of-bounds memory write in the mongod process. The issue results from an inconsistency in the internal field-name-to-index mapping within the time-series bucket catalog. Under certain conditions this can result in arbitrary code execution. This issue impacts MongoDB Server v5.0 versions prior to 5.0.33, v6.0 versions prior to 6.0.28, v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

CVSS metrics

6 scores · 3 sources · 2 versions

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

51%

Versus all other CVEs

30-day change

+0.09 pp

From 0.57% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.66%

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≥ 5.0.0, < 5.0.33 | ≥ 6.0.0, < 6.0.28 | ≥ 7.0.0, < 7.0.34 | ≥ 8.0.0, < 8.0.23 | ≥ 8.2.0, < 8.2.9 | ≥ 8.3.0, < 8.3.2
Mongodb inc1 product
  • mongodb server≥ 5.0, < 5.0.33 | ≥ 6.0, < 6.0.28 | ≥ 7.0, < 7.0.34 | ≥ 8.0, < 8.0.23 | ≥ 8.2, < 8.2.9 | ≥ 8.3, < 8.3.2
Ubuntu1 product
  • mongodbAll versions (No fix recorded)

3 vendors · 3 products

References

3 links