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Improper Authorization in MongoDB Server Allows Unauthorized Actions on System Collections

Type: advisorySource: OSV1 source record

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 their assigned privileges should not permit. This could result in critical system collections being dropped and recreated without proper authorization.

Announced Source revision 1
Original source ↗

BIT-mongodb-2026-18690

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:BIT-mongodb-2026-18690

mongodb

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
7.0.40

Source reference: /affected/0/ranges

8.0.29

Source reference: /affected/0/ranges

8.3.8

Source reference: /affected/0/ranges

9.0.2

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "7.0.0"
          },
          {
            "fixed": "7.0.40"
          },
          {
            "introduced": "8.0.0"
          },
          {
            "fixed": "8.0.29"
          },
          {
            "introduced": "8.2.0"
          },
          {
            "fixed": "8.3.8"
          },
          {
            "introduced": "9.0.0"
          },
          {
            "fixed": "9.0.2"
          }
        ]
      }
    ],
    "package": {
      "name": "mongodb",
      "purl": "pkg:bitnami/mongodb",
      "ecosystem": "Bitnami"
    },
    "severity": [
      {
        "type": "CVSS_V4",
        "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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:X/R:X/V:X/RE:X/U:X"
      }
    ],
    "database_specific": {
      "source": "https://github.com/bitnami/vulndb/tree/main/data/mongodb/BIT-mongodb-2026-18690.json"
    }
  }
]
Related CVEs
CVE-2026-18690

Source reference: /aliases

Publisher severity

high

Source reference: /database_specific/severity

Event
#59510 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement