What’s Vulnerable › Vulnerabilities

CVE-2026-45151: NanoMQ: NULL Pointer Dereference

• Severity: low (CVSS 2.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-29 · updated 2026-07-22
• Weakness: CWE-476

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.

Affected products

• nanomq: through 0.24.8

References

• https://github.com/nanomq/nanomq/security/advisories/GHSA-9qhf-wgp4-p7w5
• https://github.com/nanomq/nanomq/security/advisories/GHSA-9qhf-wgp4-p7w5

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