CVE-2026-8053
FlatBSON Duplicate Field Index Drift
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.
INFO
Published Date :
May 13, 2026, 4:17 a.m.
Last Modified :
May 18, 2026, 1:06 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | NONE | a39b4221-9bd0-4244-95fc-f3e2e07f1deb | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | a39b4221-9bd0-4244-95fc-f3e2e07f1deb | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update MongoDB Server to the latest version.
- Verify database write privileges.
- Monitor for memory corruption issues.
Public PoC/Exploit Available at Github
CVE-2026-8053 has a 2 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8053.
| URL | Resource |
|---|---|
| https://jira.mongodb.org/browse/SERVER-126021 | Patch Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8053 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8053
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Python C# TSQL XSLT Yacc CSS JavaScript Shell Makefile Assembly
Desc "CVE-2026-8053 CHECKER"-20260518-16h30-GMT+7
Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8053 vulnerability anywhere in the article.
-
CybersecurityNews
Critical MongoDB Vulnerability Allow Attackers to Execute Arbitrary Code
A newly disclosed critical vulnerability in MongoDB could allow threat actors to execute arbitrary code, potentially handing them complete control over affected servers and exposing millions of record ... Read more
The following table lists the changes that have been made to the
CVE-2026-8053 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
May. 18, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 5.0.0 up to (excluding) 5.0.33 *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 6.0.0 up to (excluding) 6.0.28 *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.34 *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (excluding) 8.0.23 *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.9 *cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:* versions from (including) 8.3.0 up to (excluding) 8.3.2 Added Reference Type MongoDB, Inc.: https://jira.mongodb.org/browse/SERVER-126021 Types: Patch, Vendor Advisory -
New CVE Received by [email protected]
May. 13, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added Reference https://jira.mongodb.org/browse/SERVER-126021