NULL pointer dereference in NanoMQ - CVE-2026-45151
Published: May 12, 2026
Vulnerability identifier: #VU131138
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-45151
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: NanoMQ
Affected software:
NanoMQ
NanoMQ
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a null pointer dereference in quic_stream_recv when processing the QUIC multistream receive and reopen path. A remote attacker can trigger a substream reopen state with a null substream pointer to cause a denial of service.
The issue affects the QUIC multistream receive/reopen path and is triggered under specific stream-state timing conditions.
How to mitigate CVE-2026-45151
Install security update from vendor's website.