Vulnerability · Published Oct 7, 2026 · Assigned by GitHub_M
CVE-2026-107221Excelize: 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
Medium 6.5
In plain English
A medium-severity out-of-bounds write in excelize from qax-os. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/xuri/excelize/v2 | 2.11.1-0.20260816084418-46a5eb289448 | GHSA-8mcq-6wmr-jrjv |
| Go | github.com/xuri/excelize/v2 | 2.11.1-0.20260816084418-46a5eb289448 | GO-2026-6676 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
References
- https://github.com/qax-os/excelize/security/advisories/GHSA-8mcq-6wmr-jrjv x_refsource_CONFIRM
- https://github.com/qax-os/excelize/pull/2376 x_refsource_MISC
- https://github.com/qax-os/excelize/commit/46a5eb289448e40fbc7d3294589b03861fb822f0 x_refsource_MISC