CVE-2026-33374 (GCVE-0-2026-33374)
Vulnerability from cvelistv5
Published
2026-10-13 17:05
Modified
2026-10-13 19:21
Severity ?
VLAI Severity ?
EPSS score ?
Summary
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.
References
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Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Grafana | Grafana Enterprise |
Version: 12.0.0 ≤ 12.3.11 Version: 12.4.0 ≤ Version: 13.0.0 ≤ Version: 13.1.0 ≤ Version: 13.2.0 ≤ |
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{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-33374",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-10-13T17:25:44.714882Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-10-13T19:21:25.512Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
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"product": "Grafana Enterprise",
"vendor": "Grafana",
"versions": [
{
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"status": "affected",
"version": "12.0.0",
"versionType": "semver"
},
{
"lessThan": "12.4.13",
"status": "affected",
"version": "12.4.0",
"versionType": "semver"
},
{
"lessThan": "13.0.11",
"status": "affected",
"version": "13.0.0",
"versionType": "semver"
},
{
"lessThan": "13.1.8",
"status": "affected",
"version": "13.1.0",
"versionType": "semver"
},
{
"lessThan": "13.2.4",
"status": "affected",
"version": "13.2.0",
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}
]
},
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},
{
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"status": "affected",
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"versionType": "semver"
},
{
"lessThan": "13.0.11",
"status": "affected",
"version": "13.0.0",
"versionType": "semver"
},
{
"lessThan": "13.1.8",
"status": "affected",
"version": "13.1.0",
"versionType": "semver"
},
{
"lessThan": "13.2.4",
"status": "affected",
"version": "13.2.0",
"versionType": "semver"
}
]
}
],
"datePublic": "2026-10-13T11:41:03.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-770",
"description": "CWE-770",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "CWE-400",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "CWE-789",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-13T17:05:49.782Z",
"orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
"shortName": "GRAFANA"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://grafana.com/security/security-advisories/cve-2026-33374"
}
],
"source": {
"discovery": "INTERNAL_FINDING"
},
"title": "Unbounded memory allocation in the Prometheus rule conversion API"
}
},
"cveMetadata": {
"assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
"assignerShortName": "GRAFANA",
"cveId": "CVE-2026-33374",
"datePublished": "2026-10-13T17:05:49.782Z",
"dateReserved": "2026-03-19T07:55:06.977Z",
"dateUpdated": "2026-10-13T19:21:25.512Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-33374\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-13T17:25:44.714882Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-13T19:21:22.099Z\"}}], \"cna\": {\"title\": \"Unbounded memory allocation in the Prometheus rule conversion API\", \"source\": {\"discovery\": \"INTERNAL_FINDING\"}, \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 6.5, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\"}}], \"affected\": [{\"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\"}], \"datePublic\": \"2026-10-13T11:41:03.000Z\", \"references\": [{\"url\": \"https://grafana.com/security/security-advisories/cve-2026-33374\", \"tags\": [\"vendor-advisory\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-770\", \"description\": \"CWE-770\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-789\", \"description\": \"CWE-789\"}]}], \"providerMetadata\": {\"orgId\": \"57da9224-a3e2-4646-9d0e-c4dc2e05e7da\", \"shortName\": \"GRAFANA\", \"dateUpdated\": \"2026-10-13T17:05:49.782Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-33374\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-13T19:21:25.512Z\", \"dateReserved\": \"2026-03-19T07:55:06.977Z\", \"assignerOrgId\": \"57da9224-a3e2-4646-9d0e-c4dc2e05e7da\", \"datePublished\": \"2026-10-13T17:05:49.782Z\", \"assignerShortName\": \"GRAFANA\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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