{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107223","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-07T14:34:14.816Z","datePublished":"2026-10-07T18:48:54.172Z","dateUpdated":"2026-10-07T22:05:27.449Z"},"containers":{"cna":{"title":"Excelize: Unbounded <col max> attribute is loaded with no MaxColumns check and expanded per-column by flatCols(), so any column mutator hangs or OOMs the process","problemTypes":[{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/qax-os/excelize/security/advisories/GHSA-fq3v-74gv-27gm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-fq3v-74gv-27gm"},{"name":"https://github.com/qax-os/excelize/pull/2370","tags":["x_refsource_MISC"],"url":"https://github.com/qax-os/excelize/pull/2370"},{"name":"https://github.com/qax-os/excelize/commit/a54c578af309fa81f448143ed2b7a91192cc58a7","tags":["x_refsource_MISC"],"url":"https://github.com/qax-os/excelize/commit/a54c578af309fa81f448143ed2b7a91192cc58a7"}],"affected":[{"vendor":"qax-os","product":"excelize","versions":[{"version":">= 2.1.0, <= 2.11.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-07T18:48:54.172Z"},"descriptions":[{"lang":"en","value":"Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.1.0 to 2.11.0, flatCols expands file-loaded column ranges without validating Min and Max against the worksheet column limit. SetColWidth reaches flatCols, which expands xlsxCol.Min through xlsxCol.Max without enforcing MaxColumns. When a crafted worksheet supplies an oversized col max attribute and the application invokes a column mutator, flatCols performs a deep copy and append for every attacker-selected column number, allowing an attacker to consume excessive CPU and memory or trigger OOM. No fixed version is available as of this review."}],"source":{"advisory":"GHSA-fq3v-74gv-27gm","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-07T22:03:57.126591Z","id":"CVE-2026-107223","options":[{"Exploitation":"none"},{"Automatable":"no"},{"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":"2026-10-07T22:05:27.449Z"}}]}}