{"id":"CVE-2026-55439","state":"PUBLISHED","title":"Halo: Path Traversal in Backup Download Leads to Arbitrary File Read","description":"Halo is an open source website building tool. Prior to 2.24.3, a path traversal vulnerability in the backup download endpoint allows authenticated administrators to read arbitrary files from the server filesystem. The backup download endpoint (GET /apis/console.api.migration.halo.run/v1alpha1/backups/{name}/files/{filename}) in MigrationServiceImpl.download() resolves the backup filename via Path.resolve() without validating that the resolved path stays within the designated backups directory. Also, the Backup creation endpoint (POST /apis/migration.halo.run/v1alpha1/backups) does not sanitize the status fields during creation This vulnerability is fixed in 2.24.3.","publishedAt":"2026-06-25T15:57:08.639Z","updatedAt":"2026-06-25T18:41:27.946Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L","source":"GitHub_M"},"assigner":"GitHub_M","products":["halo-dev halo"],"affected":[{"vendor":"halo-dev","product":"halo","versions":[{"version":"< 2.24.3","status":"affected"}]}],"references":["https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66","https://github.com/halo-dev/halo/issues/10064"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/55xxx/CVE-2026-55439.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-55439","state":"PUBLISHED","datePublished":"2026-06-25T15:57:08.639Z","dateUpdated":"2026-06-25T18:41:27.946Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-16T21:59:57.017Z"},"containers":{"cna":{"title":"Halo: Path Traversal in Backup Download Leads to Arbitrary File Read","descriptions":[{"lang":"en","value":"Halo is an open source website building tool. Prior to 2.24.3, a path traversal vulnerability in the backup download endpoint allows authenticated administrators to read arbitrary files from the server filesystem. The backup download endpoint (GET /apis/console.api.migration.halo.run/v1alpha1/backups/{name}/files/{filename}) in MigrationServiceImpl.download() resolves the backup filename via Path.resolve() without validating that the resolved path stays within the designated backups directory. Also, the Backup creation endpoint (POST /apis/migration.halo.run/v1alpha1/backups) does not sanitize the status fields during creation This vulnerability is fixed in 2.24.3."}],"affected":[{"vendor":"halo-dev","product":"halo","versions":[{"version":"< 2.24.3","status":"affected"}]}],"references":[{"url":"https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66","name":"https://github.com/halo-dev/halo/security/advisories/GHSA-h8wj-chr2-hf66","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/halo-dev/halo/issues/10064","name":"https://github.com/halo-dev/halo/issues/10064","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-25T15:57:08.639Z"},"source":{"advisory":"GHSA-h8wj-chr2-hf66","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/halo-dev/halo/issues/10064","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-25T18:41:20.038602Z","id":"CVE-2026-55439","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-25T18:41:27.946Z"}}]}}}