CVE-2026-88858

Full vulnerability record from the local CVENow database.
Description

A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts.
Severity
MEDIUM
CVSS score
6.5 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
[email protected]
Published
2026-10-28 17:18:45.967000
Last modified
2026-10-29 15:29:45.363000
View original CVE JSON
{
  "id": "CVE-2026-88858",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-28T17:18:45.967",
  "lastModified": "2026-10-29T15:29:45.363",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A user with the Viewer role in Grafana can crash the server by submitting a crafted server-side math expression (uncontrolled recursion). A user with permission to provision alert rules can make the outage persist across restarts."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Grafana",
          "product": "Grafana OSS",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7.4.0",
              "lessThanOrEqual": "11.6.16",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.0.0",
              "lessThanOrEqual": "12.2.10",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.3.0",
              "lessThanOrEqual": "12.3.11",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.4.0",
              "lessThanOrEqual": "12.4.13",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.0.0",
              "lessThanOrEqual": "13.0.11",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.1.0",
              "lessThanOrEqual": "13.1.8",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.2.0",
              "lessThanOrEqual": "13.2.4",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Grafana",
          "product": "Grafana Enterprise",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "7.4.0",
              "lessThanOrEqual": "11.6.16",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.0.0",
              "lessThanOrEqual": "12.2.10",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.3.0",
              "lessThanOrEqual": "12.3.11",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "12.4.0",
              "lessThanOrEqual": "12.4.13",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.0.0",
              "lessThanOrEqual": "13.0.11",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.1.0",
              "lessThanOrEqual": "13.1.8",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "13.2.0",
              "lessThanOrEqual": "13.2.4",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        },
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-674"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://grafana.com/security/security-advisories/cve-2026-88858",
      "source": "[email protected]"
    }
  ]
}