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CVE-2026-63087— Grafana OnCall 1.16.11 Unauthenticated Token Hijack via Plugin Install Endpoint

Quick assessment

Affected
grafana-cold-storage oncall
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grafana oncall是Grafana公司开源的一个事件响应平台。 Grafana OnCall 1.16.11及之前版本存在授权问题漏洞，该漏洞源于未经验证的访问问题，允许远程攻击者通过向内部插件安装端点发送POST请求并使用公开源代码中的硬编码默认stack_id和org_id值获取有效的PluginAuthToken，然后利用该令牌对所有内部API端点进行身份验证、通过user-context标头引导路径创建任意管理员用户、撤销合法插件令牌，并通过覆盖组织的grafana_url和api_to

CVSS 9.8 · Critical EPSS 0.71% · P52

Affected Version Matrix 1

VendorProduct Version RangeStatus
grafana-cold-storage oncall ≤ 1.16.11 affected
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I. Basic Information for CVE-2026-63087

Vulnerability Information
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Vulnerability Title
Grafana OnCall 1.16.11 Unauthenticated Token Hijack via Plugin Install Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Grafana OnCall through 1.16.11 contains an unauthenticated access vulnerability that allows remote attackers to obtain a valid PluginAuthToken by sending a POST request to the internal plugin install endpoint using hardcoded default stack_id and org_id values present in the public source tree. Attackers can leverage the acquired token to authenticate against all internal API endpoints, create arbitrary Admin users via the user-context header bootstrap path, revoke the legitimate plugin token, and redirect OnCall-to-Grafana API calls to an attacker-controlled host by overwriting the organization's grafana_url and api_token.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana OnCall 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana oncall是Grafana公司开源的一个事件响应平台。 Grafana OnCall 1.16.11及之前版本存在授权问题漏洞，该漏洞源于未经验证的访问问题，允许远程攻击者通过向内部插件安装端点发送POST请求并使用公开源代码中的硬编码默认stack_id和org_id值获取有效的PluginAuthToken，然后利用该令牌对所有内部API端点进行身份验证、通过user-context标头引导路径创建任意管理员用户、撤销合法插件令牌，并通过覆盖组织的grafana_url和api_to
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
grafana-cold-storage oncall 0 ~ 1.16.11 -

II. Public POCs for CVE-2026-63087

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 10042 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-63087

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Vendor Advisories for CVE-2026-63087 (1)

Security Blog Posts for CVE-2026-63087 (1)

IV. Related Vulnerabilities

Same product: oncall
Same weakness: CWE-306

V. Comments for CVE-2026-63087

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