CVE-2026-93752: Nv Cssom

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

CSSOM through 0.5.0 contains a denial of service vulnerability in CSSStyleDeclaration.setProperty() that fails to validate reserved property names. Attackers can supply a stylesheet with a declaration named length to replace the internal counter and trigger excessive memory allocation during cssText serialization, causing process termination.

Affected products

• Nv Cssom: up to and including 0.5.0

Published 2026-09-18. Last modified 2026-09-22.