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CVE-2026-15318— Sipeed PicoClaw MQTT Channel mqtt.go authorization

Quick assessment

Affected
Sipeed PicoClaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Sipeed picoclaw是Sipeed公司的嵌入式服务器。 Sipeed PicoClaw 0.2.9及之前版本存在授权问题漏洞，该漏洞源于MQTT Channel Handler组件文件pkg/channels/mqtt/mqtt.go中参数client_id的操作导致授权错误，可能允许远程攻击者进行攻击。

CVSS 6.3 · Medium EPSS 0.37% · P28

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 10

VendorProduct Version RangeStatus
Sipeed PicoClaw 0.2.0 affected
0.2.1 affected
0.2.2 affected
0.2.3 affected
0.2.4 affected
0.2.5 affected
0.2.6 affected
0.2.7 affected
… +2 more rows
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I. Basic Information for CVE-2026-15318

Vulnerability Information
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Vulnerability Title
Sipeed PicoClaw MQTT Channel mqtt.go authorization
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in Sipeed PicoClaw up to 0.2.9. Affected by this issue is some unknown functionality of the file pkg/channels/mqtt/mqtt.go of the component MQTT Channel Handler. This manipulation of the argument client_id causes incorrect authorization. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The reported GitHub issue was closed automatically due to inactivity.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Sipeed PicoClaw 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Sipeed picoclaw是Sipeed公司的嵌入式服务器。 Sipeed PicoClaw 0.2.9及之前版本存在授权问题漏洞，该漏洞源于MQTT Channel Handler组件文件pkg/channels/mqtt/mqtt.go中参数client_id的操作导致授权错误，可能允许远程攻击者进行攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Sipeed PicoClaw 0.2.0 cpe:2.3:a:sipeed:picoclaw:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-15318

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III. Intelligence Information for CVE-2026-15318

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Other References for CVE-2026-15318 (1)

Same Patch Batch · Sipeed · 2026-07-10 · 4 CVEs total

CVE-2026-15319 7.3 HIGH Sipeed PicoClaw Launcher access_control.go IPAllowlist access control
CVE-2026-15317 6.3 MEDIUM Sipeed PicoClaw Guarded Web Fetch Flow web.go WebFetchTool.Execute server-side request for
CVE-2026-15320 5.4 MEDIUM Sipeed PicoClaw pico.go rt.ReloadConfig authorization

IV. Related Vulnerabilities

Same product: PicoClaw
Same vendor: Sipeed
Same weakness: CWE-863

V. Comments for CVE-2026-15318

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