---
title: "CVE-2026-92761: WebVirtCloud - Broken Access Control"
description: "WebVirtCloud contains a broken access control caused by improper validation of permission flags in UserInstance grants, letting attackers with read-only grants perform privileged actions, exploit requires attacker to have read-only grants."
url: https://panop.io/threat-heartbeat/CVE-2026-92761/
---

# CVE-2026-92761 WebVirtCloud - Broken Access Control

WebVirtCloud contains a broken access control caused by improper validation of permission flags in UserInstance grants, letting attackers with read-only grants perform privileged actions, exploit requires attacker to have read-only grants.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.61% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92761)

## Details

Type

Broken Access Control

Impact

Broken Access Control

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Update to the latest version with proper permission validation.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92761](https://nvd.nist.gov/vuln/detail/CVE-2026-92761)
- [https://github.com/retspen/webvirtcloud/issues/682](https://github.com/retspen/webvirtcloud/issues/682)
- [https://www.vulncheck.com/advisories/webvirtcloud-missing-authorization-on-instance-control-actions](https://www.vulncheck.com/advisories/webvirtcloud-missing-authorization-on-instance-control-actions)
- [https://github.com/retspen/webvirtcloud](https://github.com/retspen/webvirtcloud)
- [https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L316-L330](https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L316-L330)
- [https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L356-L363](https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L356-L363)
- [https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L538-L546](https://github.com/retspen/webvirtcloud/blob/1b2da68b2800f94674dd96f4a986cde30ac88280/instances/views.py#L538-L546)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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