Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package ruff (opens in a new tab)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-RUFF-17987314
- published16 Jul 2026
- disclosed14 Jul 2026
Introduced: 14 Jul 2026
CVE-2026-49458 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:10.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruff package and not the ruff package as distributed by RHEL.
DOMPurify is a DOM-only cross-site scripting sanitizer for HTML, MathML, and SVG. Prior to 3.4.6, DOMPurify.sanitize(node, { IN_PLACE: true }) accepted same-origin foreign-realm DOM nodes while follow-on checks used parent-realm constructors, causing instanceof checks for forms, named node maps, document fragments, and elements to fail and skip clobber, template-content, and shadow-DOM sanitization branches so executable markup could survive. This issue is fixed in version 3.4.6.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2500636
- https://access.redhat.com/security/cve/CVE-2026-49458
- https://github.com/cure53/DOMPurify/commit/bb7739e5bccec7e1ab3dae3f3e42d02db3acaaae
- https://github.com/cure53/DOMPurify/releases/tag/3.4.6
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-hpcv-96wg-7vj8