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CVE-2026-107225— Excelize: GetStyle panics on a negative fillId, borderId or fontId in styles.xml

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 2.8.0 至 2.11.0 中， 函数在处理填充、边框和字体提取时所使用的谓词（predicates）仅对攻击者可控制的样式表索引检查了上界。 依赖于 谓词，这些谓词未能阻止负的 、 和 值传递到切片索引操作中。当构造不良的 文件中包含负的 、 或 ，且应用程序读取该样式时，负值标识符仅因未检查下界而通过上界谓词验证，最终成为负的切片索引，导致攻击者在读取单元格样式时可引发程序恐慌（panic）。截至本次审查

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
qax-os excelize >= 2.8.0, <= 2.11.0 affected
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I. Basic Information for CVE-2026-107225

Vulnerability Information
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Vulnerability Title
Excelize: GetStyle panics on a negative fillId, borderId or fontId in styles.xml
Source: CVE Program / CVE List V5
Vulnerability Description
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.8.0 to 2.11.0, GetStyle's fill, border, and font extraction predicates check only upper bounds for attacker-controlled style-table indices. File.GetStyle relies on extractStyleCondFuncs predicates that allow negative FillID, BorderID, and FontID values to reach slice indexing. When a crafted styles.xml supplies a negative fillId, borderId, or fontId and the application reads the style, a negative identifier passes the upper-bound-only predicate and becomes a negative slice index, allowing an attacker to panic while reading cell styling. 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
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
qax-os excelize >= 2.8.0, <= 2.11.0 -

II. Public POCs for CVE-2026-107225

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III. Intelligence Information for CVE-2026-107225

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Other References for CVE-2026-107225 (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-2026-107222 6.5 MEDIUM Excelize: GetConditionalFormats indexes conditional-formatting rule sub-elements with no l
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-20

V. Comments for CVE-2026-107225

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