CVE-2026-82052 (GCVE-0-2026-82052)

Vulnerability from cvelistv5 – Published: 2026-09-08 16:12 – Updated: 2026-09-10 18:30
VLAI
Title
$regexFindAll may crash mongod server when byte-matching multi-byte UTF-8 chars
Summary
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.
Severity
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/AU:Y/R:A
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 17:55 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
MongoDB MongoDB Server Affected: 8.3.0 , < 8.3.9 (semver)
Affected: 8.0 , < 8.0.30 (semver)
Affected: 7.0 , < 7.0.41 (semver)
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