CVE-2026-107221: medium-severity vulnerability in qax-os excelize
Excelize: a row whose earlier cell has a higher column reference than its last cell panics index out of range on almost every worksheet read API
Published
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.5
exploitation probability
—
observed exploitation
nono source reports it
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.0.0 to 2.11.0, checkRow sizes its target cell slice from the last cell in XML document order and then re-scatters every cell by its explicit column reference. GetCellValue reaches workSheetReader and checkRow, where targetList is too short for an earlier out-of-order cell. When a crafted row places a higher-column cell before a lower-column final cell and a non-streaming worksheet API reads the sheet, the earlier cell's column index exceeds the slice length derived from the final cell, allowing an attacker to cause an unrecovered panic and terminate the process. No fixed version is available as of this review.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Affected products
qax-os · excelizeRelated CVEs — qax-os excelize
In the same product, most dangerous first.
CVE-2026-59162MEDIUMExcelize: Negative shared-string index causes panic in GetCellValue and GetRowsEPSS 0.7%CVE-2026-59161HIGHExcelize: Streaming GetRows row-bound bypass causes attacker-controlled allocationEPSS 0.7%CVE-2026-54063HIGHExcelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS)EPSS 0.6%CVE-2026-107225MEDIUMExcelize: GetStyle panics on a negative fillId, borderId or fontId in styles.xmlEPSS —CVE-2026-107224MEDIUMExcelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReaderEPSS —CVE-2026-107223HIGHExcelize: Unbounded <col max> attribute is loaded with no MaxColumns check and expanded per-column by flatCols(), so any column mutator hangs or OOMs the processEPSS —