CVE-2026-93752

High

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.

SeverityHigh
CVSS7.5
Exploit probability—
ProductCSSOM
PublishedSep 18, 2026
First seenSep 18, 2026
Weakness typeCWE-915CWE-915

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
NV CSSOMv ≤ 0.5.0—

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