Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the external engine plugin loader concatenates a user-supplied engine name into a filesystem path without filtering path separators or .. components. An authenticated user with CREATE FUNCTION privileges can use a crafted ENGINE name to load an arbitrary shared library from anywhere on the filesystem via path traversal. The library's initialization code executes immediately during loading, before Firebird validates the module, achieving code execution as the server's OS account. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7pxc-h3rv-r257 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.9 · firebirdsqlNVD modified 2026-10-26 22:10
Affected (CPE criteria) 1
cpe:2.3:a:firebirdsql:firebird:*:*:*:*:*:*:*:*
References 4
- https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14 Release Notes
- https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7 Release Notes
- https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4 Release Notes
- https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7pxc-h3rv-r257 Exploit, Vendor Advisory