CVE-2026-107222

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.7.0 to 2.11.0, conditional-format extraction indexes required child slices or dereferences an optional colorScale child without validating malformed rule structure. GetConditionalFormats reaches extractCondFmtCellIs and also indexes ColorScale.Cfvo, DataBar.Cfvo, and DataBar.Color without complete structural checks. When a crafted worksheet supplies a cellIs, dataBar, or colorScale rule missing expected children and the application calls GetConditionalFormats, missing formula, color, value-object, or colorScale data reaches an out-of-range index or nil dereference, allowing an attacker to panic and terminate an unprotected process. No fixed version is available as of this review.

CVSS 3.1

6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS

0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-25)

CWEs

CWE-129, CWE-476

Published

2026-10-07

Modified

2026-10-13

Record from

the NVD, synced 2026-10-19

Affected

• excelize:excelize

Packages (OSV)

References

• https://github.com/qax-os/excelize/commit/be7a16390fa69c71d3ca618c741d1a2b5ed362cd
• https://github.com/qax-os/excelize/pull/2375
• https://github.com/qax-os/excelize/security/advisories/GHSA-rxcj-4pj5-74gr
• https://github.com/qax-os/excelize/security/advisories/GHSA-rxcj-4pj5-74gr

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