An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This is due to an internal-use aggregation stage being reachable by external clients without an appropriate authorization check on its embedded operations.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/SERVER-129936 |
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History
Thu, 13 Aug 2026 11:00:00 +0000
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| First Time appeared |
Mongodb
Mongodb mongodb Server |
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| Vendors & Products |
Mongodb
Mongodb mongodb Server |
Tue, 11 Aug 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 11 Aug 2026 19:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | An issue in MongoDB Server's aggregation framework could allow an authenticated user with only read privileges to perform write operations against collections they should not be able to modify. This is due to an internal-use aggregation stage being reachable by external clients without an appropriate authorization check on its embedded operations. | |
| Title | Improper Authorization in MongoDB Aggregation Framework Allows Read-Only User to Perform Unauthorized Write Operations | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mongodb
Published: 2026-08-11T18:37:23.858Z
Updated: 2026-08-11T20:25:49.570Z
Reserved: 2026-08-03T15:53:43.502Z
Link: CVE-2026-18704
Updated: 2026-08-11T20:25:43.990Z
Status : Awaiting Analysis
Published: 2026-08-11T19:17:25.050
Modified: 2026-08-28T21:16:15.740
Link: CVE-2026-18704
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