Snipe-IT vulnerable to stored XSS via Markdown custom field
### Impact CommonMark is configured with `html_input => 'escape'`, which blocks raw HTML injection. However, javascript: URIs in Markdown hyperlinks are not sanitized. A user with `assets.edit` permission can inject a malicious link into any markdown-textarea custom field. Any user who opens the asset detail page and clicks the link executes arbitrary JavaScript in their browser session.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-55464US | medium5.4 | — | ||
Snipe-IT is an IT asset/license management system. Prior to 8.6.2, CommonMark escapes raw HTML but does not sanitize javascript: URIs in Markdown hyperlinks, allowing a user with a… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/grokability/snipe-itPACKAGE
- https://github.com/grokability/snipe-it/commit/006981cccffce1739e24d3b680b676f772f40e2dWEB
- https://github.com/grokability/snipe-it/releases/tag/v8.6.2WEB
- https://github.com/grokability/snipe-it/security/advisories/GHSA-r52f-r9v5-66xrWEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-55464ADVISORY
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