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CVE-2026-107212— Excelize: Unbounded row number in Rows.Columns makes GetRows and the Rows iterator loop for days

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 是一个用于读写 Microsoft Excel 电子表格的 Go 语言库。在版本 2.1.0 至 2.11.0 中， 方法允许传入一个超出 （总行数）的“前瞻”行号，而未应用由 所执行的边界限制。 依赖于 和 ，但 在没有 中进行限制检查的情况下，会直接消耗行属性 。当构造的电子表格在一个普通有效行之后放置一个过大的行号，并且应用程序调用 或迭代 时，迭代器会跳过所有缺失的行号，而不是拒绝该工作簿。这允许攻击者在可控的时间内消耗一个 CPU 核心资源。截至本次审查时，尚无修复版本可用。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
qax-os excelize >= 2.1.0, <= 2.11.0 affected
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I. Basic Information for CVE-2026-107212

Vulnerability Information
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Vulnerability Title
Excelize: Unbounded row number in Rows.Columns makes GetRows and the Rows iterator loop for days
Source: CVE Program / CVE List V5
Vulnerability Description
Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.1.0 to 2.11.0, Rows.Columns accepts a look-ahead row number above TotalRows without applying the limit enforced by Rows.Next. File.GetRows relies on Rows.Next and Rows.Columns, but Rows.Columns consumes the row r attribute without the limit check in Rows.Next. When a crafted worksheet places an oversized row number after an ordinary valid row and the application calls GetRows or iterates Rows, the iterator advances through every missing row number instead of rejecting the workbook, allowing an attacker to consume a CPU core for an attacker-controlled duration. 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:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
qax-os excelize >= 2.1.0, <= 2.11.0 -

II. Public POCs for CVE-2026-107212

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III. Intelligence Information for CVE-2026-107212

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Other References for CVE-2026-107212 (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-2026-107214 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-2026-107225 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-770

V. Comments for CVE-2026-107212

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