Vulnerability · Published Oct 13, 2026 · Assigned by Commvault
CVE-2026-77090CVFS Information Disclosure
High 8.7
In plain English
A high-severity XML external entity in Commvault Cloud from Commvault. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.3%top 73.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
CVFS contained an XML external entity (XXE) reference handling issue affecting information dislcosure. Software customers upgrade to resolved maintenance release. Update CVFS.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Commvault | Commvault Cloud | 11.46.0 – through 11.46.2911.44.0 – through 11.44.2411.40.0 – through 11.40.7711.36.0 – through 11.36.126 |
| Commvault | Grid(HSX) CVFS | 5.0.1.0 – through 5.0.14.4 |
Weakness: CWE-611 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N