Is CVE-2026-63087 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-63087 being exploited in the wild.

How severe is CVE-2026-63087?

Critical severity, with a CVSS score of 9.8, published 16 July 2026.

Which products and versions are affected?

Grafana OnCall through 1.16.11.

Is there a fix for CVE-2026-63087?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-63087 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-63087?

Check whether you run Grafana OnCall at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-63087: Grafana OnCall authentication bypass in plugin install endpoint

CVE-2026-63087 · Severity: critical · CVSS 9.8 · Published 2026-07-16

Grafana OnCall is an incident response tool used to manage on-call rotations and alerts. A security flaw allows unauthorized individuals to gain full administrative control over the system by exploiting a weakness in how the software handles plugin installations. An attacker could use this access to steal sensitive data, create new administrator accounts, or redirect communications to a malicious server, potentially disrupting emergency response operations.

Vendors: Grafana.

Quick answers

Is CVE-2026-63087 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-63087 being exploited in the wild.
How severe is CVE-2026-63087?: Critical severity, with a CVSS score of 9.8, published 16 July 2026.
Which products and versions are affected?: Grafana OnCall through 1.16.11.
Is there a fix for CVE-2026-63087?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-63087 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-63087?: Check whether you run Grafana OnCall at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

An unauthenticated access vulnerability (CWE-306) exists in Grafana OnCall through version 1.16.11 due to a lack of authentication on the internal plugin installation endpoint. By sending a POST request to '/api/internal/v1/plugin/v2/install/' using hardcoded 'stack_id' and 'org_id' values found in the public source tree, a remote attacker can obtain a valid 'PluginAuthToken'. This token grants access to all internal API endpoints. Attackers can subsequently create arbitrary Admin users via the user-context header bootstrap path, revoke legitimate tokens, and hijack OnCall-to-Grafana communications by overwriting the 'grafana_url' and 'api_token' settings. The repository was archived in June 2026, and no official patch is currently noted.

Affected products

Grafana OnCall through 1.16.11

Timeline

2026-06-05: other: Repository archived by owner
2026-07-16: advisory: CVE published to NVD

References

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