CVE Explorer
CVE-2026-35217
NanoMQ contains a protocol-semantics flaw in its MQTT v5 `SUBSCRIBE` handling: if a subscription entry is missing the final 1-byte `Subscription Options` field, the broker may still accept the malformed packet and install the subscription into internal broker state. Under a specific packet-length construction, the same parser flaw also causes a 1-byte out-of-bounds read that crosses the real heap allocation boundary and is detected by ASAN as a `heap-buffer-overflow`.
If the consumed byte happe
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"nanomq","vendor":"nanomq","versions":[{"status":"affected","version":"<= 0.24.14"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d871bfbdb2afd1ae4f7fb95f50d37a1e45e7210d04e20183295cd64598e0a5c0 · sha256:787da69e7f4b4951… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d871bfbdb2afd1ae4f7fb95f50d37a1e45e7210d04e20183295cd64598e0a5c0 · sha256:787da69e7f4b4951… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d871bfbdb2afd1ae4f7fb95f50d37a1e45e7210d04e20183295cd64598e0a5c0 · sha256:787da69e7f4b4951… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/nanomq/nanomq/security/advisories/GHSA-w4xh-p384-w556","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nanomq/nanomq/security/advisories/GHSA-w4xh-p384-w556"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d871bfbdb2afd1ae4f7fb95f50d37a1e45e7210d04e20183295cd64598e0a5c0 · sha256:787da69e7f4b4951… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/nanomq/nanomq/security/advisories/GHSA-w4xh-p384-w556"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d871bfbdb2afd1ae4f7fb95f50d37a1e45e7210d04e20183295cd64598e0a5c0 · sha256:787da69e7f4b4951… · /containers/adp/0/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.