{"id":"CVE-2026-107220","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107220","generatedAt":"2026-10-28T04:18:05.479Z","title":"When a crafted worksheet contains an empty mergeCell ref and a non-streaming cell API reads the worksheet, cellInRange indexes four positions in an empty slice, allowing an attacker to panic on the first affected cell operation.","description":"Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.7.1 to 2.11.0, mergeCellsParser leaves the cached rectangle empty for an empty mergeCell ref and then passes that empty slice to cellInRange without a length check. GetCellValue reaches mergeCellsParser, which passes an empty rectangle derived from the mergeCell ref attribute into cellInRange. When a crafted worksheet contains an empty mergeCell ref and a non-streaming cell API reads the worksheet, cellInRange indexes four positions in an empty slice, allowing an attacker to panic on the first affected cell operation. No fixed version is available as of this review.","published":"2026-10-07T19:17:34.000Z","lastModified":"2026-10-13T14:23:04.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-125","CWE-129"],"affected":["excelize/excelize"],"epss":{"score":0.00264,"percentile":0.18244,"date":"2026-10-27","history":[{"date":"2026-10-08","score":0.00244,"percentile":0.14304}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.26%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-07T19:17:34.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-07T19:17:34.447Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/qax-os/excelize/commit/99903a3240e58a47ff28fb8e05a03bd9d496ec24","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/qax-os/excelize/pull/2379","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-g27h-8qhm-6pff","tags":["Exploit","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/qax-os/excelize/security/advisories/GHSA-g27h-8qhm-6pff","tags":["Exploit","Vendor Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107220","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}