CVE-2026-93752 CSSOM through 0.5.0 Denial of Service via length Property
Attackers can cause a denial of service in CSSOM by supplying a stylesheet with a reserved 'length' property, triggering excessive memory allocation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93752?
CVE-2026-93752 is a high-severity denial of service vulnerability in NV CSSOM, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-915
Which versions are affected by CVE-2026-93752?
How do I fix CVE-2026-93752?
No fix has been published for CVE-2026-93752 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-93752 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93752 exists.
Sources
Also known as GHSA-38j3-w94g-v5m4.