Description
The Prometheus rule conversion API endpoints in Grafana do not limit request body size, allowing authenticated users to trigger unbounded memory allocations that can crash the server through out-of-memory conditions.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Grafana | Grafana Enterprise | 12.0.0 – ≤ 12.3.11, 12.4.0 – < 12.4.13, 13.0.0 – < 13.0.11, 13.1.0 – < 13.1.8, 13.2.0 – < 13.2.4 | 12.4.13 |
| Grafana | Grafana OSS | 12.0.0 – ≤ 12.3.11, 12.4.0 – < 12.4.13, 13.0.0 – < 13.0.11, 13.1.0 – < 13.1.8, 13.2.0 – < 13.2.4 | 12.4.13 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | grafana | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | grafana12.4 | 12.4.12-0.5.hum1 | RHSA-2026:84422 |
| Red Hat Hardened Images 1 | grafana13.2 | 13.2.4-0.1.hum1 | RHSA-2026:85544 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | grafana | 12.4.14-r0 | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | grafana-12.3 | No fix yet | — |
Advisories 3
- RHSA-2026:84422 Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:85544 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- WID-SEC-2026-3910 Grafana: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 19, 2026
References
- https://grafana.com/security/security-advisories/cve-2026-33374 vendor-advisory