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Medium 6.5Published Oct 13, 2026
CVE-2026-33374Unbounded memory allocation in the Prometheus rule conversion API
Updated under an hour ago ()
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It affects Grafana Enterprise and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-770, CWE-400, CWE-789
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GRAFANA
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 13, 2026
- First seen by InfoSec Signals
- Oct 13, 2026
Affected products
Grafana Grafana Enterprise grafana:enterprise (from the name) | from 12.0.0 through 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 | CNA record |
Grafana Grafana OSS grafana:oss (from the name) | from 12.0.0 through 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 | CNA record |
References
- https://grafana.com/security/security-advisories/cve-2026-33374vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.