{"id":"CVE-2026-15815","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-15815","generatedAt":"2026-10-28T06:35:14.878Z","title":"A crafted plugin archive can chain relative symbolic link entries to escape the plugin installation directory, writing arbitrary files and an executable backend binary outside that directory.","description":"Grafana OSS and Grafana Enterprise did not safely resolve symbolic links when\nextracting plugin archives. A crafted plugin archive can chain relative symbolic link\nentries to escape the plugin installation directory, writing arbitrary files and an\nexecutable backend binary outside that directory. The dropped executable runs with the\nprivileges of the Grafana server process, resulting in remote code execution.\n\nPlugin archives are extracted before their signature is verified, so a valid plugin\nsignature does not prevent the write. An operator can therefore be affected by\ninstalling a plugin that appears legitimate, as well as by installing a plugin from an\narbitrary archive using grafana-cli, the GF_INSTALL_PLUGINS environment variable, or\npreinstall configuration.\n\nGrafana Enterprise is affected because it includes the same plugin extraction code as\nGrafana OSS.","published":"2026-09-17T21:17:11.000Z","lastModified":"2026-09-19T04:17:53.000Z","status":"Awaiting Analysis","sourceIdentifier":"security@grafana.com","cvss":{"version":"3.1","score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-22","CWE-59","CWE-94"],"affected":[],"epss":{"score":0.00685,"percentile":0.5242,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.69%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-15815","source":"security@grafana.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-15815","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}