CVE WatchSep 22, 2026

CVE-2026-93752

CSSOM through 0.5.0 contains a denial of service vulnerability in CSSStyleDeclaration.setProperty() that fails to validate reserved property

CVSS

7.5

High

EPSS

0.5%

p40

KEV

—

Exploit Today

0-100

Published: Sep 18, 2026 · Last modified: Sep 22, 2026 · CWE-915

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-09-192026-09-23

Technical 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.

Official references

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