High severity · published Jul 10, 2026
CVE-2026-33382
Denial of service via unbounded request body size
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 33% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GR
Grafana · Grafana
11.6.0 through 11.6.14; 12.2.0 through 12.2.8; 12.3.0 through 12.3.6; 12.4.0 through 12.4.3; 13.0.0 through 13.0.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33382
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33382
Vendor Advisory
https://grafana.com/security/security-advisories/cve-2026-33382
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