CVE-2026-96746CWE-787

CVE-2026-96746

Medium · published September 24, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
29.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
CVSS v4.0
8.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
EPSS
0.00366 · 29.2th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-09-24T20:17Z
References (3)
https://github.com/mongodb/mongo-c-driver/releases/tag/1.30.12 · [email protected]https://github.com/mongodb/mongo-c-driver/releases/tag/2.5.5 · [email protected]https://github.com/mongodb/mongo-c-driver/security/advisories/GHSA-frjf-h5jg-4v46 · [email protected]
EPSS history
Timeline
  • 26 SEP 03:27Z
    EPSS moved — → 0%
    epss
  • 24 SEP 15:51Z
    Heap buffer overflow via mid-scan command list growth in client topology monitoring
    cvelistv5