SEPTEMBER 18, 2026
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Case File

CVE-2026-66797

MEDIUM · CVSS 5.4 EPSS 0.26%

Source: NVD + CISA KEV + EPSS · Published 2026-08-21 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Apache CloudStack's annotation functionality is vulnerable due to improper access control, allowing any authenticated user to create and view annotations on entities they do not own by exploiting the addAnnotation and listAnnotation APIs. This could lead to unauthorized disclosure of sensitive information and manipulation of comments. Organizations using affected versions (4.15.0.0 to 4.20.3.0 and 4.21.0.0 to 4.22.1.0) should prioritize upgrading to versions 4.20.3.1 or 4.22.1.1 or later to mitigate this risk.

CVE
CVE-2026-66797
Severity
MEDIUM
CVSS
5.4
EPSS
0.26%
Apache

Original NVD Description

Improper access control in CloudStack's annotation functionality allows unauthorized comment creation and disclosure. The addAnnotation and listAnnotation APIs perform an ownership check when an entity's UUID is specified, but fail to honor its result correctly. This lets any authenticated user write annotations to, and disclose existing annotations/comments on, an entity they don't own by simply supplying its UUID. This issue affects Apache CloudStack: from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

Related CVEs

Other vulnerabilities affecting the same vendor(s)