High 8.8Published Sep 16, 2026

CVE-2026-92761WebVirtCloud Missing Authorization on Instance Control Actions

Updated under an hour ago (2026-10-19 07:30 UTC)

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It affects retspen webvirtcloud. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for retspen webvirtcloud

Exploited in the last 30 days

WebVirtCloud fails to properly validate permission flags in UserInstance grants, allowing view-only users to perform privileged actions. Attackers with read-only grants can power off virtual machines, reset root passwords, install SSH keys, and manage ISO images by exploiting the get_instance gate that only checks grant existence.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 21, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

retspen webvirtcloud retspen:webvirtcloud (from the name)	1b2da68b2800f94674dd96f4a986cde30ac88280	CNA record

References

https://github.com/retspen/webvirtcloud/issues/682issue-tracking
https://github.com/retspen/webvirtcloudproduct
https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L316-L330technical-description
https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L356-L363technical-description
https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L538-L546technical-description
https://www.vulncheck.com/advisories/webvirtcloud-missing-authorization-on-instance-control-actionsthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.