{
"id": "GHSA-p4r4-xvrq-gvmc",
"aliases": [
"CVE-2026-21728"
],
"details": "Tempo queries with large limits can cause large memory allocations which can impact the availability of the service, depending on its deployment strategy.\n\nMitigation can be done by setting max_result_limit in the search config, e.g. to 262144 (2^18).",
"summary": "Grafana Tempo has an Uncontrolled Resource Consumption issue",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.3.0"
},
{
"fixed": "2.8.4"
}
]
}
],
"package": {
"name": "github.com/grafana/tempo",
"ecosystem": "Go"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "2.9.0"
},
{
"fixed": "2.9.2"
}
]
}
],
"package": {
"name": "github.com/grafana/tempo",
"ecosystem": "Go"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "2.10.0"
},
{
"fixed": "2.10.2"
}
]
}
],
"package": {
"name": "github.com/grafana/tempo",
"ecosystem": "Go"
}
}
],
"modified": "2026-05-05T00:24:31Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-04-24T09:30:30Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21728",
"type": "ADVISORY"
},
{
"url": "https://github.com/grafana/tempo/pull/6525",
"type": "WEB"
},
{
"url": "https://github.com/grafana/tempo/commit/650eb1985a0776789c8564122990f588a742356f",
"type": "WEB"
},
{
"url": "https://github.com/grafana/tempo",
"type": "PACKAGE"
},
{
"url": "https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-10.md?plain=1#L328",
"type": "WEB"
},
{
"url": "https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-8.md?plain=1#L251",
"type": "WEB"
},
{
"url": "https://github.com/grafana/tempo/blob/4dc3e5b0d3463a0b67498b662b85a148698b4afd/docs/sources/tempo/release-notes/version-2/v2-9.md?plain=1#L224",
"type": "WEB"
},
{
"url": "https://grafana.com/security/security-advisories/cve-2026-21728",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-400"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-04-24T09:16:03Z",
"github_reviewed_at": "2026-05-05T00:24:31Z"
}
}