CVE-2026-28383 Grafana plugin resources can lead to unbounded memory allocation

What is CVE-2026-28383?

CVE-2026-28383 is a medium-severity denial of service vulnerability in Grafana Grafana, published on 13 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A request to the Grafana plugin resources endpoint can cause unbounded memory allocation by reading the entire request body into memory. An authenticated user can exploit this to trigger an out-of-memory condition, potentially causing a denial of service.

Weakness: CWE-770

Which versions are affected by CVE-2026-28383?

1 open source package ship an affected version, including grafana. It affects 1 product.

Products include Grafana Grafana.

How do I fix CVE-2026-28383?

Upgrade grafana to a fixed version for your release line: 11.6.14, 12.2.8, 12.3.6 or 12.4.3.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-28383 being exploited?

There is no known exploitation of CVE-2026-28383 in the wild and no public exploit code.

Other vulnerabilities in Grafana Grafana

• CVE-2021-43798 Grafana Path Traversal Exploited High 7.5
• CVE-2025-41115 Incorrect privilege assignment Critical 10.0
• CVE-2022-39328 Grafana vulnerable to race condition allowing privilege escalation Critical 9.8
• CVE-2022-28660 Auth bypass in n/a Critical 9.8
• CVE-2022-26148 Information disclosure in n/a Critical 9.8

All Grafana Grafana vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-grafana-2026-28383, GHSA-9mfc-92xm-c5mf, MINI-2p8w-vm68-9cq7, MINI-5jqw-cf9f-8g8j, MINI-5rrq-hch6-7v5m, MINI-66mv-74m5-wf2p and 13 more.