Improper Access Control Allowing Cross-User Session Metadata Disclosure in $listSessions Aggregation Stage
Priority LOW 24CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00277 20th percentileScored 2026-11-07
Fix Fixed MongoDB Server (MongoDB): 7.0.39, 8.0.28, 8.3.7
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| MongoDB | MongoDB Server | 7.0 to before 7.0.39; 8.0 to before 8.0.28; 8.3.0 to before 8.3.7 | 7.0.39, 8.0.28, 8.3.7 | Patch available | CNA |
- MongoDB Server VendorMongoDB Affected 7.0 to before 7.0.39; 8.0 to before 8.0.28; 8.3.0 to before 8.3.7 Fixed in 7.0.39, 8.0.28, 8.3.7 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* | 7.0.0 to before 7.0.39; 8.0.0 to before 8.0.28; 8.3.0 to before 8.3.7 | Vulnerable | MongoDB |
- cpe:2.3:a:mongodb:mongodb:*:*:*:*:-:*:*:* Versions 7.0.0 to before 7.0.39; 8.0.0 to before 8.0.28; 8.3.0 to before 8.3.7 Vulnerable ·MongoDB
Remediation
- Fix · CNA MongoDB Server (MongoDB) Fixed in 7.0.39, 8.0.28, 8.3.7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-13061
- 2026-10-03 Alias added: GHSA-r25x-6f4h-78mr
References
More Mongodb vulnerabilities
- TI-2025-13542 Zlib compressed protocol header length confusion may allow memory read KEVCVSS 4.0HIGH 8.7
- TI-2013-01669 MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the… CVSS 2.0MEDIUM 6.0
- TI-2026-56639 Uncontrolled Resource Consumption in MongoDB Sharded Cluster Router Allows Unauthenticated Denial of Service CVSS 4.0HIGH 8.7
- TI-2026-56628 Reachable assertion in MongoDB Server CVSS 4.0HIGH 8.7
- TI-2026-15322 Improper Input Validation in MongoDB Aggregation Framework Allows Unauthenticated Denial of Service on mongos CVSS 4.0HIGH 8.7
- TI-2026-08537 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2026-13061 · CVE Program
- CVE-2026-13061 · NVD
- FIRST EPSS
- GHSA-r25x-6f4h-78mr · GitHub Advisory Database · CC BY 4.0
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