MongoDB Crash via $_requestReshardingResumeToken (Change Streams)
CVE-2026-9746 Published on June 9, 2026
Server crashes in case of the use of exchange
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.
Vulnerability Analysis
CVE-2026-9746 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2026-9746 has been classified to as an assertion failure vulnerability or weakness.
Products Associated with CVE-2026-9746
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Affected Versions
MongoDB Server:- Version 8.3.0 and below 8.3.3 is affected.
- Version 8.2.0 and below 8.2.10 is affected.
- Version 8.0.0 and below 8.0.24 is affected.
- Version 7.0.0 and below 7.0.35 is affected.