CVE-2026-107222Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no length or nil check
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-129, CWE-476
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
qax-os excelize qax_os:excelize (from the name) | from 2.7.0, <= 2.11.0 | CNA record |
excelize excelize excelize:excelize | from 2.7.0 through 2.11.0 | NVD |
References
- https://github.com/qax-os/excelize/security/advisories/GHSA-rxcj-4pj5-74grx-refsource-confirm, exploit, vendor-advisory
- https://github.com/qax-os/excelize/pull/2375x-refsource-misc, issue-tracking, patch
- https://github.com/qax-os/excelize/commit/be7a16390fa69c71d3ca618c741d1a2b5ed362cdx-refsource-misc, exploit, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.