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CVE-2026-76878

Quick assessment

Affected
OpenStack Aodh
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenStack Aodh是OpenStack基金会的一个云环境中的告警服务。 OpenStack Aodh 22.0.1之前版本存在处理逻辑错误漏洞，该漏洞源于告警列表API对all_projects查询参数检查不当，可能导致非管理员用户列出所有项目的告警，泄露信任webhook URL、Heat信号端点、项目ID和用户ID等信息。

CVSS 8.4 · High EPSS 0.54% · P44

Affected Version Matrix 3

VendorProduct Version RangeStatus
OpenStack Aodh 10.0.0< 20.0.1 affected
21.0.0< 21.0.1 affected
22.0.0< 22.0.1 affected
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I. Basic Information for CVE-2026-76878

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In OpenStack Aodh before 22.0.1, the alarm list API bypasses project scoping when the all_projects query parameter is set to false. The API checks for the presence of the all_projects key rather than its value; a true value enforces the administrator-only policy, but a false value removes the key and skips the branch that normally restricts results to the caller's project. A non-admin user with the reader role can list alarms from all projects, exposing alarm actions containing trust webhook URLs, Heat signal endpoints, project IDs, and user IDs. The parameter can also be combined with a foreign project_id to target a specific project's alarms. A related concern is that OpenStack Watcher does not apply authorization to its webhook trigger endpoint. Any authenticated user who learns an audit's webhook URL, for example from this leaked Aodh alarm metadata, can start an EVENT audit and its associated action plan regardless of their own project or role. The webhook endpoint has lacked policy enforcement since its introduction in the Ussuri release (Watcher 4.0.0).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用不正确变量或索引作为参数的函数调用
Source: CVE Program / CVE List V5
Vulnerability Title
OpenStack Aodh 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenStack Aodh是OpenStack基金会的一个云环境中的告警服务。 OpenStack Aodh 22.0.1之前版本存在处理逻辑错误漏洞，该漏洞源于告警列表API对all_projects查询参数检查不当，可能导致非管理员用户列出所有项目的告警，泄露信任webhook URL、Heat信号端点、项目ID和用户ID等信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenStack Aodh 10.0.0 ~ 20.0.1 -

II. Public POCs for CVE-2026-76878

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III. Intelligence Information for CVE-2026-76878

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Vendor Advisories for CVE-2026-76878 (3)

Mailing List Discussions for CVE-2026-76878 (2)

IV. Related Vulnerabilities

Same vendor: OpenStack
Same weakness: CWE-688

V. Comments for CVE-2026-76878

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