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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

MongoDBCVE-2026-82053

MongoDB Server: improper access control

MongoDB

CVE-2026-82053 · Published Sep 8, 2026 · updated Sep 16, 2026

High7.6
Fix: upgrade to 8.3.9 or later (3 fixed versions below)
MongoDB advisory

A security issue exists in MongoDB's LDAP authorization integration where pooled LDAP connections can retain stale authentication identities after user authentication under certain configurations. Subsequent authorization queries may execute under an unintended LDAP identity rather than the expected one. This can result in incorrect role assignments based on the LDAP directory's access control configuration, potentially allowing an authenticated user to acquire elevated privileges that were not intended by the deployment's authorization policy.

Affected versions

PackageAffectedFixed in
MongoDB Server
Product
>= 8.3.0, < 8.3.98.3.9
>= 8.0.0, < 8.0.308.0.30
>= 7.0.0, < 7.0.417.0.41
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/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
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-863

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