CVE-2026-18698

published 2026-08-11

CVE-2026-18698: An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that…

Priority P4 32 medium 5.4 CVSS 3.1

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

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of collection metadata and, on certain deployment configurations, unauthorized modification of system collection data.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
mongodb	mongodb	—	—
mongodb	mongodb	—	—
mongodb	mongodb	—	—
mongodb	mongodb	>= 7.0.0 < 7.0.40	7.0.40
mongodb	mongodb	>= 8.0.0 < 8.0.29	8.0.29
mongodb	mongodb	8.2.0 – 8.2.12	—
mongodb	mongodb	>= 8.3.0 < 8.3.8	8.3.8
mongodb	mongodb_server	>= 7.0 < 7.0.40	7.0.40
mongodb	mongodb_server	>= 8.0 < 8.0.29	8.0.29
mongodb	mongodb_server	>= 8.3.0 < 8.3.8	8.3.8

CVSS provenance

nvd v3.1 5.4 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

nvd v4.0 5.3 MEDIUM CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/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:X/R:X/V:X/RE:X/U:X

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CWE-863