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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (52.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/NV/CSSOM/issues/119 (issue-tracking)
- github.com/NV/CSSOM (product)
- github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleD… (technical-description)
- github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleD… (technical-description)
- www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-p… (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.