CVE-2026-61633
- Source
- https://cve.org/CVERecord?id=CVE-2026-61633
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61633.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-61633
- Aliases
-
- GHSA-m7mp-rr3v-hmhr
- Published
- 2026-09-18T16:18:57Z
- Modified
- 2026-09-20T14:24:20Z
- Severity
-
- 2.0 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:L CVSS Calculator
- Summary
- NanoMQ: Infinite Loop in UNSUBSCRIBE Decoder Leading to Remote DoS
- Details
-
NanoMQ is an MQTT broker. Prior to 0.24.14, the NanoMQ client function nni_mqtt_msg_decode_unsubscribe() in nng/src/supplemental/mqtt/mqtt_codec.c does not handle a failed read_uint16() while counting topics in a malformed UNSUBSCRIBE packet. A zero-length topic followed by trailing data can leave buf.curpos unchanged while topic_count continues to increase, allowing a malicious MQTT broker to hang a connecting MQTT 3.1.1 client, consume CPU and memory, and repeatedly deny service when automatic reconnection is enabled. The broker-side nmq_unsubinfo_decode path is not affected. This issue is fixed in version 0.24.14.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-835" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61633.json" }- References
-
- https://github.com/nanomq/nanomq/releases/tag/0.24.14
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/61xxx/CVE-2026-61633.json
- https://github.com/nanomq/nanomq/security/advisories/GHSA-m7mp-rr3v-hmhr
- https://nvd.nist.gov/vuln/detail/CVE-2026-61633
- https://github.com/nanomq/NanoNNG/commit/fa8d859bb39841e46cfc6cce280d242bd782ad3d
- https://github.com/nanomq/NanoNNG/pull/1518
Affected packages
Git / github.com/nanomq/nanomq
Affected ranges
Affected versions
0.*
0.0.1
0.0.2
0.0.3
0.1.0
0.10.1
0.10.5
0.10.8
0.11.0
0.11.2
0.11.3
0.11.5
0.11.8
0.11.82
0.12.0
0.12.1
0.12.2
0.12.5
0.13
0.13.0
0.13.5
0.13.6
0.13.8
0.14.0
0.14.1
0.14.5
0.14.8
0.15.0
0.15.1
0.15.2
0.15.3
0.15.5
0.16.0
0.16.2
0.16.3
0.16.5
0.17.0
0.17.2
0.17.5
0.17.8
0.18.1
0.18.2
0.19.0
0.19.1
0.19.5
0.2.0
0.2.1
0.2.2
0.2.5
0.20.0
0.20.5
0.20.6
0.20.8
0.21
0.21.1
0.21.10
0.21.2
0.21.5
0.21.6
0.21.7
0.21.8
0.21.9
0.22.0
0.22.1
0.22.10
0.22.2
0.22.3
0.22.4
0.22.6
0.22.7
0.22.8
0.23.0
0.23.1
0.23.10
0.23.2
0.23.3
0.23.4
0.23.5
0.23.6
0.23.7
0.23.7-11
0.23.8
0.23.9
0.24.0
0.24.1
0.24.10
0.24.11
0.24.11-sdv
0.24.12
0.24.13
0.24.2
0.24.3
0.24.3-5
0.24.4
0.24.5
0.24.6
0.24.7
0.24.8
0.24.9
0.3.0
0.3.2
0.3.3
0.3.4
0.3.5
0.3.8
0.4.0
0.4.1
0.4.2
0.4.3
0.4.5
0.4.8
0.5.0
0.5.2
0.5.5
0.5.8
0.5.9
0.6.0
0.6.2
0.6.3
0.6.4
0.6.7rc
0.6.8
0.7.0
0.7.2
0.7.3
0.7.4
0.7.4rc
0.7.5
0.7.5rc
0.7.8
0.7.9
0.8.0
0.8.3
0.8.5
0.8.6log
0.9.0
0.9.2
0.9.5
0.9.7
Database specific
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-61633.json"
vanir_signatures
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vanir_signatures_modified
"2026-09-20T14:24:20Z"