CVE-2025-42873: SAP SE SAPUI5 Framework Markdown-It Component

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

SAPUI5 (and OpenUI5) packages use outdated 3rd party libraries with known security vulnerabilities. When markdown-it encounters special malformed input, it fails to terminate properly, resulting in an infinite loop. This Denial of Service via infinite loop causes high CPU usage and system unresponsiveness due to a blocked processing thread. This vulnerability has no impact on confidentiality or integrity but has a high impact on system availability.

Affected products

• SAP SE SAPUI5 Framework Markdown-It Component: version 756 only; version 757 only; version 758 only

Published 2025-12-09. Last modified 2026-10-07.