GHSA-W36G-F98M-WM99

Vulnerability from github – Published: 2026-02-25 15:31 – Updated: 2026-02-25 15:31
VLAI?
Details

A time-of-create-to-time-of-use (TOCTOU) vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so.

This requires several very stringent conditions to be met:

  • The attacker must have admin access to the specific datasource prior to its first deletion.
  • Upon deletion, all steps within the attack must happen within the next 30 seconds and on the same pod of Grafana.
  • The attacker must delete the datasource, then someone must recreate it.
  • The new datasource must not have the attacker as an admin.
  • The new datasource must have the same UID as the prior datasource. These are randomised by default.
  • The datasource can now be re-deleted by the attacker.
  • Once 30 seconds are up, the attack is spent and cannot be repeated.
  • No datasource with any other UID can be attacked.
Severity ?
2.6 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
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{
  "affected": [],
  "aliases": [
    "CVE-2026-21725"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-25T13:16:05Z",
    "severity": "LOW"
  },
  "details": "A time-of-create-to-time-of-use (TOCTOU) vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so.\n\nThis requires several very stringent conditions to be met:\n\n- The attacker must have admin access to the specific datasource prior to its first deletion.\n- Upon deletion, all steps within the attack must happen within the next 30 seconds and on the same pod of Grafana.\n- The attacker must delete the datasource, then someone must recreate it.\n- The new datasource must not have the attacker as an admin.\n- The new datasource must have the same UID as the prior datasource. These are randomised by default.\n- The datasource can now be re-deleted by the attacker.\n- Once 30 seconds are up, the attack is spent and cannot be repeated.\n- No datasource with any other UID can be attacked.",
  "id": "GHSA-w36g-f98m-wm99",
  "modified": "2026-02-25T15:31:39Z",
  "published": "2026-02-25T15:31:39Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21725"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2026-21725"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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