CVE-2026-9753
Analyzed
Analyzed - Analysis Complete
MongoDB $_internalApplyOplogUpdate Memory Corruption Vulnerability
Vulnerability report for CVE-2026-9753, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-06-09
Last updated on: 2026-06-18
Assigner: MongoDB, Inc.
Description
Description
The $_internalApplyOplogUpdate aggregation pipeline stage can be used to execute a document diff containing a malformed binary diff to return memory out-of-bounds or crash the server. $_internalApplyOplogUpdate can be executed by any authenticated user with access to the aggregate command.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mongodb | mongodb | to 7.0.35 (exc) |
| mongodb | mongodb | From 8.0.0 (inc) to 8.0.24 (exc) |
| mongodb | mongodb | From 8.2.0 (inc) to 8.2.10 (exc) |
| mongodb | mongodb | From 8.3.0 (inc) to 8.3.3 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
| CWE-1287 | The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type. |
