Cross-site Scripting (XSS) The advisory has been revoked - it doesn't affect any version of package ruff (opens in a new tab)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-18871849
- published1 Sept 2026
- disclosed23 Jul 2026
Introduced: 23 Jul 2026
CVE-2026-65898 (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 before 3.4.11 fails to clone the ALLOWED_ATTR allowlist when setConfig() is used with an uponSanitizeAttribute hook, allowing the hook to permanently mutate the shared allowlist. Attackers can register a hook that conditionally allows dangerous attributes like onerror for trusted elements, then submit untrusted content that inherits the polluted allowlist and executes event handlers as stored XSS.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2506436
- https://access.redhat.com/security/cve/CVE-2026-65898
- https://access.redhat.com/errata/RHSA-2026:58500
- https://access.redhat.com/errata/RHSA-2026:58502
- https://www.vulncheck.com/advisories/dompurify-before-permanent-attribute-allowlist-pollution-via-setconfig
- https://github.com/cure53/DOMPurify/security/advisories/GHSA-cmwh-pvxp-8882