A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization checks despite being intended for internal use, allowing a subsequent stage to be forced to execute on the router under conditions it was not designed to handle. This results in an unhandled fatal error that causes the mongos process to immediately abort, resulting in denial of service for all clients routed through the affected mongos instance.
References
| Link | Resource |
|---|---|
| https://jira.mongodb.org/browse/SERVER-130431 |
Configurations
No configuration.
History
13 Oct 2026, 17:17
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | CWE-617 | |
| Summary | (en) A security issue was discovered in MongoDB mongos (the sharded cluster router) where an authenticated user with readWrite privileges could crash the mongos process by crafting a specially formed aggregation pipeline. The issue leverages an internal aggregation stage that lacks proper authorization checks despite being intended for internal use, allowing a subsequent stage to be forced to execute on the router under conditions it was not designed to handle. This results in an unhandled fatal error that causes the mongos process to immediately abort, resulting in denial of service for all clients routed through the affected mongos instance. |
13 Oct 2026, 16:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-10-13 16:17
Updated : 2026-10-15 20:38
NVD link : CVE-2026-96299
Mitre link : CVE-2026-96299
CVE.ORG link : CVE-2026-96299
JSON object : View
Products Affected
No product.
CWE
CWE-617
Reachable Assertion