{"id":"CVE-2026-28214","summary":"Firebird server hangs when using specific clumplet on batch creation","details":"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.","aliases":["GHSA-7cq5-994r-jhrf"],"modified":"2026-07-08T08:12:26.602435920Z","published":"2026-04-17T18:35:46.974Z","related":["SUSE-SU-2026:1868-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-190","CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28214.json"},"references":[{"type":"WEB","url":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"},{"type":"WEB","url":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"},{"type":"WEB","url":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28214.json"},{"type":"ADVISORY","url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-28214"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/firebirdsql/firebird","events":[{"introduced":"1767a517f9c99ec97160cacb452fdcfd83dca9be"},{"fixed":"463bae029a4426deff7e9bb08a8317aaa398c7c7"},{"introduced":"141bb5491d24cb363f03c5a0786a32f73a1faa5b"},{"fixed":"26f6881c9eac77c5e3166d209682c0ebe8dd07c0"},{"introduced":"af1546f15fa871b313ebcc7df1fd2df3c396c616"},{"fixed":"f6d83a28c009ab039ea40ffdb4ccc58f190dfbe6"}],"database_specific":{"extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.0.14"},{"introduced":"4.0.0"},{"fixed":"4.0.7"},{"introduced":"5.0.0"},{"fixed":"5.0.4"}],"source":"AFFECTED_FIELD"}}],"versions":["v3.0.13","v4.0.6","v5.0.3","v5.0.2","v3.0.12","v4.0.5","v5.0.1","v5.0.0","v4.0.4","v3.0.11","v4.0.3","v4.0.2","v3.0.10","v3.0.9","v4.0.1","v3.0.8","v4.0.0","R3_0_7","R3_0_6","R3_0_5","R3_0_4","R3_0_3","R3_0_2","R3_0_1","R3_0_0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28214.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L"}]}