Vulnerability in MongoDB
CVE-2026-9746
When using $changestreams and $_requestReshardingResumeToken with the exchange option the server hits an invariant which causes the server to crash. There are no special privileges needed. The user must be logged in to issue the statement.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (38.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- MongoDB
- MongoDB Server — versions 8.3.0, 8.2.0, 8.0.0
Weakness classification (CWE)
References
- jira.mongodb.org/browse/SERVER-124190 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-9746?
- CVE-2026-9746 is a medium-severity vulnerability in MongoDB, classified under Reachable Assertion. CVSS score: 6.5/10. Published 2026-06-09.
- How severe is CVE-2026-9746?
- Medium severity. CVSS v3 base score is 6.5 out of 10.