High severity7.5NVD Advisory· Published Sep 18, 2026
CVE-2026-93752
CVE-2026-93752
Description
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.
Patches
Vulnerability mechanics
References
4- github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.jsnvd
- github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.jsnvd
- github.com/NV/CSSOM/issues/119nvd
- www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-propertynvd
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