Part-DB: Spreadsheet Formula Injection in XLSX Part Exports
CVSS score
4.6
EPSS probability
—
Risk score
0.5
Published
3 h ago
Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.
Impact on My Inventory
Only the personal products you have added to your account are assessed; an organisation's inventory does not appear here.
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
1
Source agreement
Tam uyum
Evidence confidence
%55
Short explanation
CVE-2026-86020 affects Part-DB versions prior to 2.13.2, allowing an authenticated user to import CSV rows with =‑prefixed formulas, which are then written unchanged into exported XLSX files as executable spreadsheet formulas.
The flaw enables an attacker to embed malicious formulas that may execute when a victim opens the spreadsheet, potentially leading to code execution or data leakage.
What should be done?
- Upgrade Part‑DB to version 2.13.2 or later if available
- If upgrade cannot be verified, follow vendor guidance to sanitize exported data
- Restrict import permissions to trusted users
- Validate and escape formula characters before exporting
Chain of evidence and sources
Part-DB, 2.13.2 öncesi sürümlerde CSV içe aktarma sırasında formül karakterlerini temizlemediği için XLSX dışa aktarımında çalıştırılabilir formül hücreleri oluşturur (S0, S1).
Bu açık, import izni olan kimliği doğrulanmış bir kullanıcının CSV dosyasına = işaretiyle başlayan değerler eklemesini gerektirir (S0).
Vendor, sorunu 2.13.2 sürümünde düzelttiğini bildiriyor; ancak resmi yama durumu doğrulanamadığı için yama durumu UNKNOWN olarak değerlendirilmiştir (S0).
Show the technical text from the sources
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.
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE: CWE-20, CWE-1236
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-86020 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | Part-DB | Part-DB-server | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 4.6 | CVSS V3_1 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | CVE CNA |
| 4.6 | CVSS V31 | MEDIUM | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.
Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-86020 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-86020 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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