CVE-2026-55464: Snipe-IT vulnerable to stored XSS via Markdown custom field

August 28, 2026

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.

References

github.com/advisories/GHSA-r52f-r9v5-66xr
github.com/grokability/snipe-it/commit/006981cccffce1739e24d3b680b676f772f40e2d
github.com/grokability/snipe-it/releases/tag/v8.6.2
github.com/grokability/snipe-it/security/advisories/GHSA-r52f-r9v5-66xr
nvd.nist.gov/vuln/detail/CVE-2026-55464

Code Behaviors & Features

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