CVE-2026-96746Heap buffer overflow via mid-scan command list growth in client topology monitoring
Updated under an hour ago ()
Does this affect you?
It affects MongoDB C Driver. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An out-of-bounds write in the connection-monitoring logic of the MongoDB C Driver may allow an unauthenticated party who controls name resolution and the responses of the hosts named in a client's connection string to write beyond the end of a heap buffer. This may cause the application using the driver to terminate unexpectedly.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB C Driver mongodb:c_driver (from the name) | before 1.30.12; from 2.0.0 before 2.5.5 | CNA record |
References
- https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-frjf-h5jg-4v46
- https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.12
- https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.5
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.