CVE-2026-82052

published 2026-09-08

CVE-2026-82052: The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain…

Priority P3 37 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	>= 7.0.0 < 7.0.41	7.0.41
mongodb	mongodb	>= 8.0.0 < 8.0.30	8.0.30
mongodb	mongodb	>= 8.3.0 < 8.3.9	8.3.9
mongodb	mongodb_server	>= 7.0 < 7.0.41	7.0.41
mongodb	mongodb_server	>= 8.0 < 8.0.30	8.0.30
mongodb	mongodb_server	>= 8.3.0 < 8.3.9	8.3.9

CVSS provenance

nvd v3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvd v4.0 7.1 HIGH CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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:Y/R:A/V:X/RE:X/U:X

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CWE-617