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TI-2026-69256 Aliases CVE-2026-107211GHSA-mx22-3794-2vpv

Unchecked pivot cache index in Excelize causes unrecoverable panic

Priority MEDIUM 43CWE-129Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-129 and the CVSS impact.

Summary

Excelize, a Go library for reading and writing Microsoft Excel spreadsheets, from 2.8.1 through 2.11.0 uses pivot table field indices from a workbook without bounds checks (CWE-129). A remote attacker who supplies a crafted workbook can trigger a Go slice-bounds panic that crashes the process or request worker, with no privileges or user interaction needed. The references link to an exploit.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Excelize is a Go language library for reading and writing Microsoft Excel spreadsheets. From 2.8.1 to 2.11.0, separately parsed pivot-table field indices are used to index the pivot-cache field-name slice without bounds checks. extractPivotTableFields uses getPivotCacheFieldsName output while processing GetPivotTables and trusts the dataField fld attribute as an index. When a crafted workbook supplies a pivot-field count mismatch or an out-of-range dataField fld value before GetPivotTables is called, the unchecked index causes a Go slice-bounds panic that escapes the library, allowing an attacker to crash the process or request worker. No fixed version is available as of this review.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00234 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed github.com/xuri/excelize/v2 (Go): 2.11.1-0.20261003002531-6258dcebc4e2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
qax-osexcelize2.8.1 – 2.11.0—No fix listedCNA
—github.com/xuri/excelize/v2 (Go)2.8.1 to before 2.11.1-0.20261003002531-6258dcebc4e22.11.1-0.20261003002531-6258dcebc4e2Patch availableGHSA-mx22-3794-2vpv
  • excelize Vendorqax-os Affected 2.8.1 – 2.11.0 Fixed in — No fix listed CNA
  • github.com/xuri/excelize/v2 (Go) Vendor— Affected 2.8.1 to before 2.11.1-0.20261003002531-6258dcebc4e2 Fixed in 2.11.1-0.20261003002531-6258dcebc4e2 Patch available GHSA-mx22-3794-2vpv

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:*2.8.1 – 2.11.0Vulnerableqax-os
  • cpe:2.3:a:excelize:excelize:*:*:*:*:*:go:*:* Versions 2.8.1 – 2.11.0 Vulnerable ·qax-os

Remediation

Update the Go module github.com/xuri/excelize/v2 to 2.11.1-0.20261003002531-6258dcebc4e2, which fixes this issue. The sources list no fixed version for excelize.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

  • Fix · GHSA-mx22-3794-2vpv github.com/xuri/excelize/v2 (Go) Fixed in 2.11.1-0.20261003002531-6258dcebc4e2 Advisory →

Timeline

  1. 2026-10-07 Threatist record created from CVE-2026-107211
  2. 2026-10-07 CISA SSVC decision points changed
  3. 2026-10-08 Alias added: GHSA-mx22-3794-2vpv
  4. 2026-10-08 Fix available: Go/github.com/xuri/excelize/[email protected] · GHSA-mx22-3794-2vpv
  5. 2026-10-08 CVSS score added · GHSA-mx22-3794-2vpv
  6. 2026-10-08 Weakness changed · GHSA-mx22-3794-2vpv
  7. 2026-10-08 5 new references · GHSA-mx22-3794-2vpv
  8. 2026-10-13 CVSS score added · NVD

References

Exploit 1

Patch 2

Advisory 1

Other 1

  • TI-2026-42325 Excelize: Streaming GetRows row-bound bypass causes attacker-controlled allocation CVSS 4.0HIGH 8.7
  • TI-2026-69266 Integer overflow in Excelize column parsing causes process panic CVSS 3.1HIGH 7.5
  • TI-2026-69263 Excelize crafted OLE files cause memory exhaustion and panic CVSS 3.1HIGH 7.5
  • TI-2026-69262 Unrecoverable panics in Excelize Decrypt on malformed OLE workbooks CVSS 3.1HIGH 7.5
  • TI-2026-69260 Unbounded row number in Excelize lets crafted spreadsheets hang reads CVSS 3.1HIGH 7.5
  • TI-2026-38996 Excelize: Unbounded Row Index Allocation in Worksheet Parser (checkSheet OOM/Panic DoS) CVSS 3.1HIGH 7.5
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences