CVE-2026-45151 NanoMQ: NULL Pointer Dereference
A null pointer dereference in NanoMQ's QUIC stream handling allows attackers to cause a denial of service by triggering a specific state condition.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45151?
CVE-2026-45151 is a low-severity vulnerability in nanomq, published on 29 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NanoMQ MQTT Broker (NanoMQ) is an all-around Edge Messaging Platform. In 0.24.8 and earlier, quic_stream_recv can dereference a null substream pointer when a substream is in reopen state. The code finishes the AIO with error but does not return before locking c->mtx.
Weakness: CWE-476
Which versions are affected by CVE-2026-45151?
How do I fix CVE-2026-45151?
No fix has been published for CVE-2026-45151 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45151 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45151 exists.
Sources
Also known as GHSA-9qhf-wgp4-p7w5.