CVE-2026-71231
IOTSmartHome - Unauthenticated SQL Injection via lastLogin Cookie
Description
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.
INFO
Published Date :
Aug. 5, 2026, 11:16 a.m.
Last Modified :
Oct. 24, 2026, 3:10 p.m.
Remotely Exploit :
Yes !
Source :
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Affected Products
The following products are affected by CVE-2026-71231
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Sanitize decoded cookie data.
- Validate cookie data integrity.
- Use parameterized queries.
- Update software to the latest version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-71231.
| URL | Resource |
|---|---|
| https://github.com/thebradleysanders/IOTSmartHome |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-71231 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-71231
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-71231 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-71231 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 24, 2026
Action Type Old Value New Value Changed Translation Title: IOTSmartHome de thebradleysanders, Description: La función checkCookie() de gui/login.php de IOTSmartHome construye una consulta de autenticación como SELECT * FROM users WHERE ID=’<cookie lastLogin decodificada>’ después de decodificar en base64 la cookie lastLogin proporcionada por el cliente a través de safe_decode(), que realiza una decodificación base64 segura para URL sin sanitización del valor decodificado antes de que se concatene en la cadena SQL. Un atacante no autenticado puede establecer una cookie lastLogin que contenga una carga útil de inyección SQL codificada en base64 (por ejemplo, base64(“ [expresión_SQLi_PoC] ”)) para eludir la autenticación y, a través de una inyección basada en UNION, extraer datos arbitrarios incluyendo credenciales de usuario. Title: IOTSmartHome de thebradleysanders, Description: La función checkCookie() de gui/login.php de IOTSmartHome construye una consulta de autenticación como SELECT * FROM users WHERE ID=’menor quecookie lastLogin decodificadamayor que’ después de decodificar en base64 la cookie lastLogin proporcionada por el cliente a través de safe_decode(), que realiza una decodificación base64 segura para URL sin sanitización del valor decodificado antes de que se concatene en la cadena SQL. Un atacante no autenticado puede establecer una cookie lastLogin que contenga una carga útil de inyección SQL codificada en base64 (por ejemplo, base64(“ [expresión_SQLi_PoC] ”)) para eludir la autenticación y, a través de una inyección basada en UNION, extraer datos arbitrarios incluyendo credenciales de usuario. -
CVE Translated by [email protected]
Oct. 23, 2026
Action Type Old Value New Value Added Translation Title: IOTSmartHome de thebradleysanders, Description: La función checkCookie() de gui/login.php de IOTSmartHome construye una consulta de autenticación como SELECT * FROM users WHERE ID=’<cookie lastLogin decodificada>’ después de decodificar en base64 la cookie lastLogin proporcionada por el cliente a través de safe_decode(), que realiza una decodificación base64 segura para URL sin sanitización del valor decodificado antes de que se concatene en la cadena SQL. Un atacante no autenticado puede establecer una cookie lastLogin que contenga una carga útil de inyección SQL codificada en base64 (por ejemplo, base64(“ [expresión_SQLi_PoC] ”)) para eludir la autenticación y, a través de una inyección basada en UNION, extraer datos arbitrarios incluyendo credenciales de usuario. -
CVE Modified by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Aug. 10, 2026
Action Type Old Value New Value Changed Description 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. 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. -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 05, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-71231', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-05T12:52:43.515445Z'} -
New CVE Received by 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
Aug. 05, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'thebradleysanders', 'product': 'IOTSmartHome', 'versions': [{'status': 'affected', 'version': '0'}], 'programFiles': ['gui/login.php'], 'defaultStatus': 'unknown'}] Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-89 Added Reference https://github.com/thebradleysanders/IOTSmartHome