CVE WatchJul 16, 2026

CVE-2026-63087

Grafana OnCall through 1.16.11 contains an unauthenticated access vulnerability that allows remote attackers to obtain a valid PluginAuthTok

CVSS

9.8

Critical

EPSS

—

KEV

—

Exploit Today

0-100

Published: Jul 16, 2026 · Last modified: Jul 16, 2026 · CWE-306

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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