{"id":"CVE-2026-107223","title":"Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets","summary":"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 reach…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-789"],"vendor":"excelize","product":"excelize","affected":["excelize >= 2.1.0, <= 2.11.0"],"patched":["github.com/xuri/excelize/v2 2.11.1-0.20260807015645-a54c578af309"],"published":"2026-10-07","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:18:46.643","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-107223","references":[{"url":"https://github.com/qax-os/excelize/commit/a54c578af309fa81f448143ed2b7a91192cc58a7","label":"security-advisories@github.com"},{"url":"https://github.com/qax-os/excelize/pull/2370","label":"security-advisories@github.com"},{"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-fq3v-74gv-27gm","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-fq3v-74gv-27gm"},{"url":"https://github.com/qax-os/excelize"}],"tags":["nvd","ghsa","go","cve.org","osv"],"epss":0.0037,"epssPercentile":0.30768,"aliases":["GHSA-fq3v-74gv-27gm"],"ecosystem":"go","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-07T22:03:57.126591Z"},"scores":{"nvd":7.5,"cna":7.1},"ingestedAt":"2026-10-07T20:46:46.977Z","slug":"CVE-2026-107223","body":"## Overview\n\nExcelize 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.\n\n## Affected\n\n- `excelize >= 2.1.0, <= 2.11.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-107223)\n\nAffected packages:\n\n- `github.com/xuri/excelize/v2 >= 2.1.0, < 2.11.1-0.20260807015645-a54c578af309`\n\nPatched in:\n\n- `github.com/xuri/excelize/v2 2.11.1-0.20260807015645-a54c578af309`\n\nSource: https://github.com/advisories/GHSA-fq3v-74gv-27gm","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":219701,"id":"CVE-2026-107223","ts":1791901785439,"field":"cvss","old":"7.1","new":"7.5"}]}