CVE-2026-93752
CSSOM through 0.5.0 Denial of Service via length Property
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-915 |
| Vendor | nv |
| Product | cssom |
| Published | Sep 18, 2026 |
| Last Updated | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
NV / CSSOM
0 ≤ 0.5.0
References
github.com: https://github.com/NV/CSSOM/issues/119 github.com: https://github.com/NV/CSSOM github.com: https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56 github.com: https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124 vulncheck.com: https://www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-property
Credits
🔍 Wayde Shi (PayPal Cyber Security Team)