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CVE-2026-55600: Part-DB: Stored HTML injection in BOM validation results via unescaped Part name

• Severity: medium (CVSS 5.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-23 · updated 2026-10-30
• Weakness: CWE-79

Description

Part-DB is an open source inventory management system for electronic components. Prior to version 2.12.2, Part-DB renders BOM validation information messages using Twig's |raw filter. These messages include translated placeholders populated with user-controlled Part names. A user who can edit a Part name can store HTML markup in the Part name. When another user imports a BOM CSV referencing that Part ID, the malicious Part name is rendered as HTML in the victim's BOM validation result page. This results in a cross-user stored HTML injection issue. JavaScript execution appears to be blocked by the current Content Security Policy, but arbitrary HTML links, forms, images, and CSS-based UI elements can still be injected into a trusted Part-DB page. This issue has been patched in version 2.12.2.

Affected products

• Part-DB-server: before 2.12.2

References

• https://github.com/Part-DB/Part-DB-server/releases/tag/v2.12.2
• https://github.com/Part-DB/Part-DB-server/security/advisories/GHSA-qqrh-jjhg-vv5r
• https://github.com/Part-DB/Part-DB-server/security/advisories/GHSA-qqrh-jjhg-vv5r

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