{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-28214", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-02-25T15:28:40.649Z", "datePublished": "2026-04-17T18:35:46.974Z", "dateUpdated": "2026-04-17T18:35:46.974Z"}, "containers": {"cna": {"title": "Firebird server hangs when using specific clumplet on batch creation", "problemTypes": [{"descriptions": [{"cweId": "CWE-190", "lang": "en", "description": "CWE-190: Integer Overflow or Wraparound", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-835", "lang": "en", "description": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "LOW", "baseScore": 6, "baseSeverity": "MEDIUM", "vectorString": "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", "version": "4.0"}}], "references": [{"name": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf"}, {"name": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14", "tags": ["x_refsource_MISC"], "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"}, {"name": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7", "tags": ["x_refsource_MISC"], "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"}, {"name": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4", "tags": ["x_refsource_MISC"], "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"}], "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"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-17T18:35:46.974Z"}, "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 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."}], "source": {"advisory": "GHSA-7cq5-994r-jhrf", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "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 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."}], "id": "CVE-2026-28214", "lastModified": "2026-04-17T19:16:35.327", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-17T19:16:35.327", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v3.0.14"}, {"source": "security-advisories@github.com", "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v4.0.7"}, {"source": "security-advisories@github.com", "url": "https://github.com/FirebirdSQL/firebird/releases/tag/v5.0.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/FirebirdSQL/firebird/security/advisories/GHSA-7cq5-994r-jhrf"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-190"}, {"lang": "en", "value": "CWE-835"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[3.0.0,3.0.14)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[4.0.0,4.0.7)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[5.0.0,5.0.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "firebird", "source": "cna", "vendor": "FirebirdSQL"}, "product": "firebird", "vendor": "firebirdsql"}], "created": "2026-04-17T21:00:12.243215+00:00", "updated": "2026-04-17T21:00:12.243303+00:00", "vendors": ["firebirdsql", "firebirdsql$PRODUCT$firebird"]}