{"id":"CVE-2026-67429","state":"PUBLISHED","title":"Flyto2 Core: Arbitrary file write via image.download (and other file-writing modules)","description":"Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related file-writing modules use caller-controlled output_dir instead of validate_path_with_env_config and its FLYTO_SANDBOX_DIR confinement, allowing attacker-controlled response bytes to be written to arbitrary filesystem paths the process can access. This issue is fixed in version 2.26.6.","publishedAt":"2026-07-29T18:50:43.378Z","updatedAt":"2026-07-29T19:04:19.327Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["flytohub flyto-core"],"affected":[{"vendor":"flytohub","product":"flyto-core","versions":[{"version":"< 2.26.6","status":"affected"}]}],"references":["https://github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r","https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc","https://github.com/flytohub/flyto-core/releases/tag/v2.26.6"],"weaknesses":["CWE-22","CWE-73"],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/67xxx/CVE-2026-67429.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-67429","state":"PUBLISHED","datePublished":"2026-07-29T18:50:43.378Z","dateUpdated":"2026-07-29T19:04:19.327Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-07-29T15:07:24.991Z"},"containers":{"cna":{"title":"Flyto2 Core: Arbitrary file write via image.download (and other file-writing modules)","descriptions":[{"lang":"en","value":"Flyto2 Core is an execution kernel for automation and AI-agent workflows. Prior to 2.26.6, image.download and related file-writing modules use caller-controlled output_dir instead of validate_path_with_env_config and its FLYTO_SANDBOX_DIR confinement, allowing attacker-controlled response bytes to be written to arbitrary filesystem paths the process can access. This issue is fixed in version 2.26.6."}],"affected":[{"vendor":"flytohub","product":"flyto-core","versions":[{"version":"< 2.26.6","status":"affected"}]}],"references":[{"url":"https://github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r","name":"https://github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc","name":"https://github.com/flytohub/flyto-core/commit/d5f89d71303e3c1e6418d347c5c55fcd173cc8cc","tags":["x_refsource_MISC"]},{"url":"https://github.com/flytohub/flyto-core/releases/tag/v2.26.6","name":"https://github.com/flytohub/flyto-core/releases/tag/v2.26.6","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H","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"}]},{"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":"2026-07-29T18:50:43.378Z"},"source":{"advisory":"GHSA-2956-977x-2w3r","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/flytohub/flyto-core/security/advisories/GHSA-2956-977x-2w3r","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T19:04:15.145181Z","id":"CVE-2026-67429","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-29T19:04:19.327Z"}}]}}}