CVE-2026-77090 CVFS Information Disclosure
An XML external entity vulnerability in Commvault CVFS allows attackers to disclose sensitive information, 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-2026-77090?
CVE-2026-77090 is a high-severity 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
CVFS contained an XML external entity (XXE) reference handling issue affecting information dislcosure. Software customers upgrade to resolved maintenance release. Update CVFS.
Weakness: CWE-611
Which versions are affected by CVE-2026-77090?
How do I fix CVE-2026-77090?
No fix has been published for CVE-2026-77090 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-77090 being exploited?
There is no known exploitation of CVE-2026-77090 in the wild and no public exploit code.
Sources
Also known as GHSA-g9jj-cpxw-62v5.