The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/SERVER-124077 |
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History
Tue, 08 Sep 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
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| First Time appeared |
Mongodb
Mongodb mongodb Server |
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| Vendors & Products |
Mongodb
Mongodb mongodb Server |
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| Metrics |
ssvc
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Tue, 08 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution. | |
| Title | $regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 chars | |
| Weaknesses | CWE-617 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mongodb
Published: 2026-09-08T16:12:15.723Z
Updated: 2026-09-08T17:55:31.610Z
Reserved: 2026-08-27T22:50:28.074Z
Link: CVE-2026-82052
Updated: 2026-09-08T17:55:28.390Z
Status : Awaiting Analysis
Published: 2026-09-08T17:18:32.987
Modified: 2026-09-08T19:07:12.210
Link: CVE-2026-82052
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