Vulnerability in Nv Cssom
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.
Vulnerability class: Mass Assignment
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-93752?
- CVE-2026-93752 is a high-severity vulnerability in Nv Cssom, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 7.5/10. Published 2026-09-18.
- How severe is CVE-2026-93752?
- High severity. CVSS v3 base score is 7.5 out of 10.