What’s Vulnerable › Vulnerabilities
CVE-2026-13061: Improper Access Control Allowing Cross-User Session Metadata Disclosure in $listSessions Aggregation Stage
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-22 · updated 2026-10-24
- Weakness: CWE-863
Description
An authenticated user may be able to view session metadata belonging to other users on the system through the $listSessions aggregation stage. This information is normally restricted to users with cluster-level administrative privileges, and includes active session identifiers, associated usernames, and activity timestamps.
Affected products
- MongoDB: from 7.0.0 before 7.0.39; from 8.0.0 before 8.0.28; from 8.3.0 before 8.3.7 — fixed in 7.0.39, 8.0.28, 8.3.7
How to fix
Upgrade to a fixed version: MongoDB 7.0.39, 8.0.28, 8.3.7. Check the vendor advisory for mitigations.
References
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