CVE-2026-97334 Network messaging layer decompression resource exhaustion
Attackers can cause service unavailability by sending highly compressed data to the network messaging layer, requiring an upgrade to the resolved maintenance release.
- 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-2026-97334?
CVE-2026-97334 is a high-severity denial of service vulnerability in Commvault Cloud, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The network messaging layer contained improper handling of highly compressed data affecting service availability. Software customers upgrade to resolved maintenance release. Update all Commvault installations, including CommServe server, Web Server, Command Center, MediaAgents, clients, and HyperScale.
Weakness: CWE-409
Which versions are affected by CVE-2026-97334?
How do I fix CVE-2026-97334?
No fix has been published for CVE-2026-97334 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-2026-97334 being exploited?
There is no known exploitation of CVE-2026-97334 in the wild and no public exploit code.
Sources
Also known as GHSA-6f78-rvx4-53fm.