openshwprojects OpenBK7231T_App MQTT Command src/cmnds/cmd_channels.c CHANNEL_SetLabel encoding error

Summaryinfo

A vulnerability categorized as very critical has been discovered in openshwprojects OpenBK7231T_App. Affected is the function CHANNEL_SetLabel of the file src/cmnds/cmd_channels.c of the component MQTT Command Handler. Such manipulation leads to encoding error. This vulnerability is listed as CVE-2026-71274. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in openshwprojects OpenBK7231T_App (affected version unknown). It has been rated as very critical. Affected by this issue is the function CHANNEL_SetLabel of the file src/cmnds/cmd_channels.c of the component MQTT Command Handler. The manipulation with an unknown input leads to a encoding error vulnerability. Using CWE to declare the problem leads to CWE-172. The product does not properly encode or decode the data, resulting in unexpected values. Impacted is confidentiality, integrity, and availability. CVE summarizes:

OpenBK7231T's CHANNEL_SetLabel() (src/cmnds/cmd_channels.c) stores channel labels received via the MQTT SetChannelLabel command using strdup() with no HTML sanitization. CHANNEL_GetLabel() returns these labels unsanitized, and they are rendered via hprintf255() at 15+ locations in src/httpserver/http_fns.c with no HTML encoding. An attacker with MQTT broker access (commonly unauthenticated in real deployments) can set a channel label containing a <script> payload that executes when any user views the device's web panel.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-71274 since 08/05/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/05/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Project Management Software

Vendor

• openshwprojects

Name

• OpenBK7231T_App

CPE 2.3info

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CPE 2.2info

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