CVE-2026-71274Hinoki check available

Stored XSS via unencoded MQTT channel labels

Published Aug 5, 2026 · Updated Aug 5, 2026

Stored XSS in OpenBK7231T_App allows attackers with MQTT broker access to execute scripts when users open its web panel. CHANNEL_SetLabel stores MQTT-supplied labels with strdup without HTML sanitization, and HTTP handlers pass the raw labels to hprintf255. Exploitation requires broker access and a subsequent panel visit; injected scripts run in that browser origin and can access panel-visible data.

CVSS severity8.5
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Stored XSS in OpenBK7231T_App allows attackers with MQTT broker access to execute scripts when users open its web panel. CHANNEL_SetLabel stores MQTT-supplied labels with strdup without HTML sanitization, and HTTP handlers pass the raw labels to hprintf255. Exploitation requires broker access and a subsequent panel visit; injected scripts run in that browser origin and can access panel-visible data.

The record

CVE
CVE-2026-71274
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
openshwprojects
Product
OpenBK7231T_App
Classifications
CWE-79, T1203
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

openshwprojects · OpenBK7231T_Appversion=0 <=*

Published CVSS scores

8.5TuranSecCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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