{"id":"CVE-2026-34232","state":"PUBLISHED","title":"Firebird: DoS via `op_response` packet from client","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 xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14.","publishedAt":"2026-04-17T18:52:11.693Z","updatedAt":"2026-04-20T13:46:08.507Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["FirebirdSQL firebird"],"affected":[{"vendor":"FirebirdSQL","product":"firebird","versions":[{"version":">= 3.0.0, < 3.0.14","status":"affected"},{"version":">= 4.0.0, < 4.0.7","status":"affected"},{"version":">= 5.0.0, < 5.0.4","status":"affected"}]}],"references":["https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2","https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"],"weaknesses":["CWE-228"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/34xxx/CVE-2026-34232.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34232","state":"PUBLISHED","datePublished":"2026-04-17T18:52:11.693Z","dateUpdated":"2026-04-20T13:46:08.507Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-26T16:22:29.034Z"},"containers":{"cna":{"title":"Firebird: DoS via `op_response` packet from client","descriptions":[{"lang":"en","value":"Firebird is an open-source relational database management system. In versions prior to 5.0.4, 4.0.7 and 3.0.14, the xdr_status_vector() function does not handle the isc_arg_cstring type when decoding an op_response packet, causing a server crash when one is encountered in the status vector. An unauthenticated attacker can exploit this by sending a crafted op_response packet to the server. This issue has been fixed in versions 5.0.4, 4.0.7 and 3.0.14."}],"affected":[{"vendor":"FirebirdSQL","product":"firebird","versions":[{"version":">= 3.0.0, < 3.0.14","status":"affected"},{"version":">= 4.0.0, < 4.0.7","status":"affected"},{"version":">= 5.0.0, < 5.0.4","status":"affected"}]}],"references":[{"url":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2","name":"https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7jq3-6j3c-5cm2","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14","tags":["x_refsource_MISC"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7","tags":["x_refsource_MISC"]},{"url":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","name":"https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-228","lang":"en","description":"CWE-228: Improper Handling of Syntactically Invalid Structure","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-17T18:52:11.693Z"},"source":{"advisory":"GHSA-7jq3-6j3c-5cm2","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-34232","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-04-20T13:42:40.302937Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-20T13:46:08.507Z"}}]}}}