thebradleysanders IOTSmartHome Authentication gui/login.php checkCookie lastLogin sql injection

Summaryinfo

A vulnerability was found in thebradleysanders IOTSmartHome. It has been declared as critical. Affected is the function checkCookie of the file gui/login.php of the component Authentication. The manipulation of the argument lastLogin results in sql injection. This vulnerability is cataloged as CVE-2026-71231. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in thebradleysanders IOTSmartHome (version now known). Affected is the function checkCookie of the file gui/login.php of the component Authentication. The manipulation of the argument lastLogin with an unknown input leads to a sql injection vulnerability. CWE is classifying the issue as CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

IOTSmartHome's gui/login.php checkCookie() function builds an authentication query as SELECT * FROM users WHERE ID='<decoded lastLogin cookie>' after base64-decoding the client-supplied lastLogin cookie via safe_decode(), which performs URL-safe base64 decoding with no sanitization of the decoded value before it is concatenated into the SQL string. An unauthenticated attacker can set a lastLogin cookie containing a base64-encoded SQL injection payload (e.g. base64("' OR '1'='1")) to bypass authentication and, via UNION-based injection, extract arbitrary data including user credentials.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-71231 since 08/05/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. 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). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

By approaching the search of inurl:gui/login.php it is possible to find vulnerable targets with Google Hacking.

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

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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Vendor

• thebradleysanders

Name

• IOTSmartHome

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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