CVE-2026-93752: high-severity vulnerability in NV CSSOM
CSSOM through 0.5.0 Denial of Service via length Property
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.7%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
NV · CSSOMReferences
https://github.com/NV/CSSOMhttps://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56https://github.com/NV/CSSOM/issues/119https://www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-property