CVE-2026-28214

Description

Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the ClumpletReader::getClumpletSize() function can overflow the totalLength value when parsing a Wide type clumplet, causing an infinite loop. An authenticated user with INSERT privileges on any table can exploit this via a crafted Batch Parameter Block to cause a denial of service against the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.

References

https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf

https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4

https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7

https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS