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TI-2026-11417 Aliases CVE-2026-13491GHSA-rwf9-x45x-533w

78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service

Priority MEDIUM 61CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-404.

Summary

A vulnerability was detected in 78 xiaozhi-esp32 up to 2.2.6. This vulnerability affects the function Application::GetInstance of the file main/protocols/mqtt_protocol.cc of the component MQTT Goodbye Handler. Performing a manipulation of the argument session_id results in denial of service. The attack is possible to be carried out remotely. The complexity of an attack is rather high. It is stated that the exploitability is difficult. The exploit is now public and may be used. The patch is named e182471f8c5a22434346bd98da34d3b66c8c8b3e. It is recommended to apply a patch to fix this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00624 50th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
78xiaozhi-esp322.2.0; 2.2.1; 2.2.2; 2.2.3; 2.2.4; 2.2.5; 2.2.6—No fix listedCNA
  • xiaozhi-esp32 Vendor78 Affected 2.2.0; 2.2.1; 2.2.2; 2.2.3; 2.2.4; 2.2.5; 2.2.6 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:78:xiaozhi-esp32:*:*:*:*:*:*:*:*——78
  • cpe:2.3:a:78:xiaozhi-esp32:*:*:*:*:*:*:*:* Versions — — ·78

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13491
  2. 2026-10-03 Alias added: GHSA-rwf9-x45x-533w
  3. 2026-11-04 EPSS moved to the 50th–90th percentile

References

Exploit 1

Patch 2

Other 1

  • TI-2026-11415 78 xiaozhi-esp32 MCP Response mcp_server.cc ParseMessage improper synchronization CVSS 4.0LOW 2.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences