Improper Validation of Specified Quantity in Input Affecting cssom package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-CSSOM-19964070
- published20 Sept 2026
- disclosed18 Sept 2026
- creditWayde Shi
Introduced: 18 Sep 2026
NewCVE-2026-93752 (opens in a new tab)How to fix?
There is no fixed version for cssom.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Quantity in Input via CSSStyleDeclaration.setProperty(), which fails to validate reserved property names. An attacker can supply a stylesheet containing a declaration named length, replacing the internal counter and triggering excessive memory allocation during cssText serialization, causing process termination.