CVE-2026-33374: Unbounded memory allocation in the Prometheus rule conversion API
Grafana · Grafana Enterprise
Vendor fix available · Affected: Grafana Enterprise · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 31% of scored CVEs
DescriptionCVE.org
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 products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Grafana · Grafana Enterprisefrom 12.0.0 up to and including 12.3.11; from 12.4.0 before 12.4.13; from 13.0.0 before 13.0.11; from 13.1.0 before 13.1.8; from 13.2.0 before 13.2.4
- Grafana · Grafana OSSfrom 12.0.0 up to and including 12.3.11; from 12.4.0 before 12.4.13; from 13.0.0 before 13.0.11; from 13.1.0 before 13.1.8; from 13.2.0 before 13.2.4
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Grafana
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-33374 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.