Medium
Unbounded memory allocation in the Prometheus rule conversion API
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.
Announced Source revision 1
Original source ↗CVE-2026-33374
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-33374
Grafana Enterprise
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Grafana OSS
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Grafana",
"product": "Grafana Enterprise",
"versions": [
{
"status": "affected",
"version": "12.0.0",
"versionType": "semver",
"lessThanOrEqual": "12.3.11"
},
{
"status": "affected",
"version": "12.4.0",
"lessThan": "12.4.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.0.0",
"lessThan": "13.0.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.1.0",
"lessThan": "13.1.8",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.2.0",
"lessThan": "13.2.4",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
},
{
"vendor": "Grafana",
"product": "Grafana OSS",
"versions": [
{
"status": "affected",
"version": "12.0.0",
"versionType": "semver",
"lessThanOrEqual": "12.3.11"
},
{
"status": "affected",
"version": "12.4.0",
"lessThan": "12.4.13",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.0.0",
"lessThan": "13.0.11",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.1.0",
"lessThan": "13.1.8",
"versionType": "semver"
},
{
"status": "affected",
"version": "13.2.0",
"lessThan": "13.2.4",
"versionType": "semver"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-33374
Source reference:
/cveMetadata/cveId
Publisher severity
medium
Source reference: /containers/cna/metrics
- Event
- #20702 · Revision 1
- Added to Heist Feed
- Publisher date