CVE-2026-33374: grafana grafana enterprise Uncontrolled Resource Consumption
CVSS: 6.5v3.1MediumAwaiting analysis
AliasesUBUNTU-CVE-2026-33374
Published 13-10-2026Last modified 13-10-2026
Vulnerability summary
CVE-2026-33374 is a medium (CVSS 6.5) Uncontrolled Resource Consumption vulnerability in grafana grafana enterprise. EPSS estimates a 0.37% chance of exploitation in the next 30 days, higher than 29.1% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (CVE.org)EPSS score
0.37%
0%100%
Low · Change unavailableKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-10-2026PublishedVulnerability first disclosed.
- 13-10-2026Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 3 sources · 1 versionMedium 6.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HSourcesAll 3 agree
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.37%
Chance of exploitation in the next 30 days
Percentile
29%
Versus all other CVEs
30-day change
Change unavailable
Change unavailable
14-10-202619-10-2026
EPSS score0.37%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-400Uncontrolled Resource ConsumptionThe product does not properly control the allocation and maintenance of a limited resource.
- CWE-770Allocation of Resources Without Limits or ThrottlingThe product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.
- CWE-789Memory Allocation with Excessive Size ValueThe product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
Affected systems
Grafana2 products
- 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
- 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
Ubuntu1 product
- grafanaAll versions (No fix recorded)
2 vendors · 3 products