CVE-2026-93752

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/NV/CSSOM
https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124
https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56
https://github.com/NV/CSSOM/issues/119
https://www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-property
https://github.com/NV/CSSOM/issues/119

Configurations

No configuration.

History

18 Sep 2026, 20:17

Type	Values Removed	Values Added
References	~~() https://github.com/NV/CSSOM/issues/119 -~~	() https://github.com/NV/CSSOM/issues/119 -

18 Sep 2026, 18:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-18 18:18

Updated : 2026-09-22 20:25

NVD link : CVE-2026-93752

Mitre link : CVE-2026-93752

CVE.ORG link : CVE-2026-93752

JSON object : View

Products Affected

No product.

CWE

CWE-915

Improperly Controlled Modification of Dynamically-Determined Object Attributes

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