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TI-2026-56242 Aliases CVE-2026-81521

Cross-database write retargeting via unvalidated dotted database name in Client.BulkWrite in the MongoDB Go Driver

Priority LOW 31CWE-99Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Partial Red Hat: 6 fixed, 3 without a fix

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat.

Summary

The MongoDB Go Driver's client-level bulk write operation may accept a caller-supplied database name containing a reserved separator character without escaping it before the name is used to build the target namespace for the operation. An application that passes untrusted input as a database name could therefore have the write directed at a database and collection other than the ones it intended. Only the Client.BulkWrite API is affected.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00236 14th percentileScored 2026-11-07
Fix Partial GO Driver (MongoDB): 2.8.2, 2.9.2Red Hat: 7 advisoriesRed Hat: 6 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MongoDBGO Driver2.1.0 to before 2.8.2; 2.9.0 to before 2.9.22.8.2, 2.9.2Patch availableCNA
  • GO Driver VendorMongoDB Affected 2.1.0 to before 2.8.2; 2.9.0 to before 2.9.2 Fixed in 2.8.2, 2.9.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mongodb:go_driver:*:*:*:*:*:mongodb:*:*2.1.0 to before 2.8.2VulnerableMongoDB
  • cpe:2.3:a:mongodb:go_driver:*:*:*:*:*:mongodb:*:* Versions 2.1.0 to before 2.8.2 Vulnerable ·MongoDB

Remediation

  • Fix · CNA GO Driver (MongoDB) Fixed in 2.8.2, 2.9.2

Red Hat 7 advisories

  • RHSA-2026:90321 Released 2026-10-26 · Red Hat rating Critical
    Red Hat OpenShift Dev Spaces 3.31.0 Release.
    • Red Hat OpenShift Dev Spaces 3.31 registry.redhat.io/devspaces/code-rhel9, registry.redhat.io/devspaces/dashboard-rhel9, registry.redhat.io/devspaces/jetbrains-ide-rhel9 +8
  • RHSA-2026:84734 Released 2026-10-19 · Red Hat rating Critical
    RHOAI 3.4.5 - Red Hat OpenShift AI
    • Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-ai-gateway-payload-processing-rhel9, registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9 +47
  • RHSA-2026:68334 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • RHEM 1.1 for RHEL 10 flightctl-1.1.4-1.el10em, flightctl-agent-1.1.4-1.el10em, flightctl-cli-1.1.4-1.el10em
    • RHEM 1.1 for RHEL 9 flightctl-1.1.4-1.el9em, flightctl-agent-1.1.4-1.el9em, flightctl-cli-1.1.4-1.el9em
Show 4 more Red Hat advisories
  • RHSA-2026:68254 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.2.1 Security Update
    • Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +11
  • RHSA-2026:68253 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +10
  • RHSA-2026:68044 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.1.4 Security Update
    • Red Hat Edge Manager 1.1 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11
  • RHSA-2026:68006 Released 2026-09-16 · Red Hat rating Important
    Red Hat Edge Manager Version 1.2.1 Security Update
    • Red Hat Edge Manager 1.2 registry.redhat.io/rhem/flightctl-alert-exporter-rhel10, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel10, registry.redhat.io/rhem/flightctl-api-rhel10 +11

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
OpenShift PipelinesAffectedNo fix yet
Red Hat OpenShift GitOpsAffectedNo fix planned: Will not fix
Red Hat Trusted Artifact SignerAffectedNo fix planned: Will not fix
RHEM 1.1 for RHEL 10Fixed RHSA-2026:68334
RHEM 1.1 for RHEL 9Fixed RHSA-2026:68334
Red Hat Edge Manager 1.1Fixed RHSA-2026:68044, RHSA-2026:68253
Red Hat Edge Manager 1.2Fixed RHSA-2026:68006, RHSA-2026:68254
Red Hat OpenShift AI 3.4Fixed RHSA-2026:84734
Red Hat OpenShift Dev Spaces 3.31Fixed RHSA-2026:90321
Not affected: 8 products
  • RHEM 1.1 for RHEL 10
  • RHEM 1.1 for RHEL 9
  • Red Hat Edge Manager 1.1
  • Red Hat Edge Manager 1.2
  • Red Hat OpenShift AI 3.4
  • Red Hat OpenShift Dev Spaces
  • Red Hat OpenShift Dev Spaces 3.31
  • Red Hat Trusted Artifact Signer

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-81521
  2. 2026-10-06 Affected versions changed · Red Hat
  3. 2026-10-06 Fix available: MongoDB/GO [email protected] · CNA
  4. 2026-10-08 Affected versions changed · Red Hat
  5. 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
  6. 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
  7. 2026-10-29 Fix available: Red Hat OpenShift Dev Spaces 3.31 · Red Hat
  8. 2026-10-30 Fix available: RHSA-2026:90321 · Red Hat

References

Advisory 1

Other 1

  • TI-2026-69717 Denial of service in MongoDB Go Driver via malformed BSON array CVSS 4.0HIGH 8.2
  • TI-2026-69716 Integer overflow in MongoDB Go Driver BSON handling causes panic CVSS 4.0HIGH 8.2
  • TI-2021-03617 Specific cstrings input may not be properly validated in the Go Driver CVSS 3.1MEDIUM 6.8
  • TI-2026-60056 GridFS data deletion via query-operator injection in file IDs in the MongoDB Go Driver CVSS 4.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences