CVE-2026-93752CWE-915

CVE-2026-93752

High · published September 18, 2026

CVSS v3.1
7.5
EPSS
1%
Percentile
51.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00680 · 51.8th percentile
Weakness
CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
Published
2026-09-18T22:18Z
References (6)
https://github.com/NV/CSSOM · [email protected]https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L112-L124 · [email protected]https://github.com/NV/CSSOM/blob/00ec21868e12422581c81779135c2f1648441204/lib/CSSStyleDeclaration.js#L41-L56 · [email protected]https://github.com/NV/CSSOM/issues/119 · [email protected]https://www.vulncheck.com/advisories/cssom-through-0.5.0-denial-of-service-via-length-property · [email protected]https://github.com/NV/CSSOM/issues/119 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 20 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 18 SEP 17:51Z
    CSSOM through 0.5.0 Denial of Service via length Property
    cvelistv5