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CVE-2026-107222— Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no length or nil check

Quick assessment

Affected
qax-os excelize
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Excelize 是一个用于读取和写入 Microsoft Excel 电子表格的 Go 语言库。在版本 2.7.0 到 2.11.0 之间，条件格式提取过程中存在以下问题：某些索引操作依赖于子切片，或访问可选的 colorScale 子元素，但未对格式不正确的规则结构进行验证。 具体而言， 函数会调用 ，并访问 、 以及 等字段，但缺少完整的结构检查。当构造的 Excel 工作表中包含缺少预期子元素的 cellIs、dataBar 或 colorScale 规则时，如果应用程序调用 ，则缺失的公式、颜色、值对象或

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 1

VendorProduct Version RangeStatus
qax-os excelize >= 2.7.0, <= 2.11.0 affected
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I. Basic Information for CVE-2026-107222

Vulnerability Information
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Vulnerability Title
Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no length or nil check
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对数组索引的验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
qax-os excelize >= 2.7.0, <= 2.11.0 -

II. Public POCs for CVE-2026-107222

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III. Intelligence Information for CVE-2026-107222

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Other References for CVE-2026-107222 (3)

Same Patch Batch · qax-os · 2026-10-07 · 15 CVEs total

CVE-2026-107211 8.7 HIGH Excelize: Unchecked pivot-cache field index in extractPivotTableFields causes unrecoverabl
CVE-2026-107213 8.7 HIGH Excelize: Nil-pointer dereference in GetSlicers when a worksheet has extLst present but no
CVE-2026-107212 7.5 HIGH Excelize: Unbounded row number in Rows.Columns makes GetRows and the Rows iterator loop fo
CVE-2026-107214 7.5 HIGH Excelize Decrypt: unrecoverable panics on malformed OLE/CFB encrypted workbooks
CVE-2026-107216 7.5 HIGH Excelize ANCHORARRAY: mutually-referencing array formulas recurse unboundedly via re-entra
CVE-2026-107215 7.5 HIGH Excelize: extractPart allocates attacker-controlled, unbounded and negative-sized buffers
CVE-2026-107217 7.5 HIGH Excelize ColumnNameToNumber: int64 overflow yields an out-of-domain coordinate with nil er
CVE-2026-107219 7.5 HIGH Excelize: Unbounded spinCount in agile decryption burns CPU during OpenFile
CVE-2026-107223 7.1 HIGH Excelize: Unbounded <col max> attribute is loaded with no MaxColumns check and expanded pe
CVE-2026-107220 6.5 MEDIUM Excelize: Panic in cellInRange on a worksheet with an empty mergeCell ref
CVE-2026-107221 6.5 MEDIUM Excelize: a row whose earlier cell has a higher column reference than its last cell panics
CVE-2026-107225 6.5 MEDIUM Excelize: GetStyle panics on a negative fillId, borderId or fontId in styles.xml
CVE-2026-107224 6.5 MEDIUM Excelize: A Zip64 uncompressed-size of 2^63 panics OpenFile/OpenReader
CVE-2026-107218 5.3 MEDIUM Excelize: RIGHT() on supplementary-plane text slices with a negative index and panics

IV. Related Vulnerabilities

Same product: excelize
Same vendor: qax-os
Same weakness: CWE-129

V. Comments for CVE-2026-107222

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