{"id":"CVE-2026-48750","state":"PUBLISHED","title":"Incus has an arbitrary file write on host via `exec-output` symlink in crafted image","description":"Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch.","publishedAt":"2026-08-21T14:19:45.109Z","updatedAt":"2026-08-26T17:24:53.540Z","severity":{"score":9.9,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["lxc incus"],"affected":[{"vendor":"lxc","product":"incus","versions":[{"version":"< 7.2.0","status":"affected"}]}],"references":["https://github.com/lxc/incus/security/advisories/GHSA-73hr-m85f-64v9"],"weaknesses":["CWE-73"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/48xxx/CVE-2026-48750.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-48750","state":"PUBLISHED","datePublished":"2026-08-21T14:19:45.109Z","dateUpdated":"2026-08-26T17:24:53.540Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-22T19:10:35.748Z"},"containers":{"cna":{"title":"Incus has an arbitrary file write on host via `exec-output` symlink in crafted image","descriptions":[{"lang":"en","value":"Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch."}],"affected":[{"vendor":"lxc","product":"incus","versions":[{"version":"< 7.2.0","status":"affected"}]}],"references":[{"url":"https://github.com/lxc/incus/security/advisories/GHSA-73hr-m85f-64v9","name":"https://github.com/lxc/incus/security/advisories/GHSA-73hr-m85f-64v9","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.9,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-73","lang":"en","description":"CWE-73: External Control of File Name or Path","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-08-21T14:19:45.109Z"},"source":{"advisory":"GHSA-73hr-m85f-64v9","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/lxc/incus/security/advisories/GHSA-73hr-m85f-64v9","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T17:24:17.722732Z","id":"CVE-2026-48750","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-08-26T17:24:53.540Z"}}]}}}