CVE-2026-82052
mediumThe $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod).
Vendor / product: Mongodb — mongodb
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (cna@mongodb.com)
Timeline (UTC)
Published: 2026-09-08 17:18
Modified: 2026-09-16 20:40
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-10-27 06:51 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
mongodb / mongodb ≥7.0.0 <7.0.41, ≥8.0.0 <8.0.30, ≥8.3.0 <8.3.9
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://jira.mongodb.org/browse/SERVER-127985
References
- https://jira.mongodb.org/browse/SERVER-127985 cna@mongodb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:51 UTC · record ↗