CVE-2026-61788

DBHub is a database MCP server for Postgres, MySQL, SQL Server, Oracle, MariaDB, SQLite. Prior to version 0.22.6, setting `readonly = true` on the `execute_sql` tool does not make the connection read-only. The connectors are written to set PostgreSQL `default_transaction_read_only=on` (and open SQLite in `readOnly` mode), but that code is gated on a config value that is never populated, so it never runs. The only thing left enforcing read-only is a classifier that inspects the first keyword of each statement. Any `SELECT` that writes or has side effects through a function call passes it. With an ordinary role this allows sequence tampering; with a privileged role it allows writing arbitrary files on the server (`lo_export`), reading arbitrary host files (`pg_read_file`), and remote code execution (`dblink` + `COPY ... TO PROGRAM`). The HTTP transport is unauthenticated and binds to `0.0.0.0` by default, so this is reachable by any network caller of `/mcp`. Version 0.22.6 patches the issue.

• CWE-184
• CWE-636
• CWE-863

• https://github.com/bytebase/dbhub/security/advisories/GHSA-mwwr-p57h-56pf

Published

Sep 24, 2026

Last Modified

Sep 24, 2026

Status

Received

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-61779NVIDIA Megatron Bridge contains a vulnerability where an att…7.8
• CVE-2026-6178The Betheme theme for WordPress is vulnerable to Stored Cros…6.4
• CVE-2026-61781pg_partman is a PostgreSQL extension that manages partitione…9.9
• CVE-2026-61782Rsdoctor is a build analyzer tailored for projects built wit…7.5
• CVE-2026-61783Wazuh is an open-source security platform providing unified …6.5
• CVE-2026-61784xhtml-purifier is a Node.js library to take in raw/unknown/u…6.1
• CVE-2026-6179Stored Cross Site Scripting in NightWolf Penetration Testing…5.4
• CVE-2026-61790Weblate is a web-based continuous localization platform used…4.4
• CVE-2026-61792Weblate is a web-based continuous localization platform used…7.7
• CVE-2026-61793Nuxt OG Image generates OG Images with Vue templates in Nuxt…6.9
• CVE-2026-61794Capsule is a multi-tenancy and policy-based framework for Ku…6.8
• CVE-2026-61795Capsule is a multi-tenancy and policy-based framework for Ku…6.8