{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-54063","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-11T18:24:35.097Z","datePublished":"2026-07-10T15:53:31.020Z","dateUpdated":"2026-07-10T18:39:48.791Z"},"containers":{"cna":{"title":"Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)","problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"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"}}],"references":[{"name":"https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","tags":["x_refsource_CONFIRM"],"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4"},{"name":"https://github.com/qax-os/excelize/releases/tag/v2.11.0","tags":["x_refsource_MISC"],"url":"https://github.com/qax-os/excelize/releases/tag/v2.11.0"}],"affected":[{"vendor":"qax-os","product":"excelize","versions":[{"version":"< 2.11.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-10T15:53:31.020Z"},"descriptions":[{"lang":"en","value":"Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. Prior to 2.11.0, the checkSheet() function in github.com/xuri/excelize/v2 uses an attacker-controlled <row r=\"N\"> XML attribute value directly as the length argument to make([]xlsxRow, row) without validating it against the Excel row limit (TotalRows = 1,048,576). A specially crafted XLSX file can trigger two denial-of-service variants: (A) an out-of-memory process kill when r=2147483647 forces a ~16 GB allocation attempt, and (B) a runtime panic via out-of-bounds slice indexing when r=-1. Any service that opens attacker-supplied XLSX files and calls GetCellValue is affected. No authentication is required. This issue is fixed in version 2.11.0."}],"source":{"advisory":"GHSA-h69g-9hx6-f3v4","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-10T18:39:45.896640Z","id":"CVE-2026-54063","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-10T18:39:48.791Z"}}]}}