XSS in Amundsen-Io Amundsen-Frontend
CVE-2026-90772
Amundsen frontend through 4.3.0 renders table, dashboard, and feature descriptions with dangerouslySetInnerHTML without HTML sanitization in ResourceListItem components. Attackers can inject malicious markup like img elements with onerror handlers into descriptions via the metadata service or Elasticsearch, executing JavaScript in every user's browser that views search results.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/amundsen-io/amundsen/issues/2362 (issue-tracking)
- github.com/amundsen-io/amundsen (product)
- github.com/amundsen-io/amundsen/blob/frontend-4.3.0/frontend/amundsen_applicati… (technical-description)
- www.vulncheck.com/advisories/amundsen-frontend-through-4.3.0-stored-xss-via-des… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90772?
- CVE-2026-90772 is a high-severity vulnerability in Amundsen-Io Amundsen-Frontend, classified under Cross-site Scripting. CVSS score: 7.6/10. Published 2026-09-13.
- How severe is CVE-2026-90772?
- High severity. CVSS v3 base score is 7.6 out of 10.