{"schemaVersion":3,"id":"CVE-2026-54063","aliases":["GHSA-h69g-9hx6-f3v4","GO-2026-5960"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-07-10T15:53:31.020Z","modified":"2026-07-10T18:39:48.791Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":7.5,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":10,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":7.5,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00607,"percentile":0.48035,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.00607},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00607,"percentile":0.48035}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00607,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00607,"percentile":0.48035}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"GITHUB_QAX-OS_EXCELIZE","name":"Excelize","source":"github","url":"https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","maturity":"poc","reliabilityScore":0.3,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling","description":"The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/770.html"}],"affected":[{"vendor":"excelize","product":"excelize","name":"excelize","label":"excelize","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.11.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.0","eol":null,"hubHref":"/vendor/excelize/excelize"},{"vendor":"github.com/xuri/excelize","product":"v2","name":"github.com/xuri/excelize/v2","label":"v2","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/xuri/excelize/v2","purlType":"golang","versions":[{"text":"< 2.11.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.0","eol":null,"hubHref":null},{"vendor":"qax-os","product":"excelize","name":"excelize","label":"excelize","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 2.11.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.0","eol":null,"hubHref":"/vendor/qax-os/excelize"}],"affectedCount":3,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","label":"github.com/qax-os/excelize/security/advisories/GHSA-h69g-9hx6-f3v4","hostname":"github.com","tags":["X Refsource CONFIRM","WEB","Advisory","Exploit","Vendor Advisory"]},{"url":"https://github.com/qax-os/excelize/releases/tag/v2.11.0","label":"github.com/qax-os/excelize/releases/tag/v2.11.0","hostname":"github.com","tags":["X Refsource MISC","WEB","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54063","label":"nvd.nist.gov/vuln/detail/CVE-2026-54063","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/qax-os/excelize","label":"github.com/qax-os/excelize","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/qax-os/excelize/commit/875b959ba62fc9bf45bb0de547ae7c7f7549835c","label":"github.com/qax-os/excelize/commit/875b959ba62fc9bf45bb0de547ae7c7f7549835c","hostname":"github.com","tags":["FIX"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21551-1","SUSE-SU-2026:23216-1","SUSE-SU-2026:23227-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:21551-1","SUSE-SU-2026:23216-1","SUSE-SU-2026:23227-1"]},"timeline":[{"kind":"published","date":"2026-07-10T15:53:31.020Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-10T18:39:48.791Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":40,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T03:39:15.043Z","stale":false,"partial":false}}