{"id":"CVE-2026-56671","state":"PUBLISHED","title":"ComfyUI: Path traversal in /experiment/models/preview allows arbitrary image file read","description":"ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, get_model_preview in app/model_manager.py joins an unrestricted filename route capture to a selected model directory without a containment check, allowing an unauthenticated remote attacker to use traversal, encoded traversal, absolute paths, or an unbounded path_index to read image-decodable files and enumerate host paths. get_model_preview (app/model_manager.py) built the path with os.path.join(folder, filename) where filename is an unrestricted {filename:.*} route capture. Literal ../, percent-encoded %2e%2e%2f, and absolute paths all escaped the model directory; path_index was also unbounded. The target file is piped through Pillow and re-encoded as WEBP, so disclosure is limited to image-decodable files plus a file-existence/enumeration oracle (and internal-path leakage via path_index errors). This issue is fixed in version 0.28.0.","publishedAt":"2026-07-31T04:21:54.417Z","updatedAt":"2026-07-31T23:19:15.408Z","severity":{"score":7.5,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["Comfy-Org ComfyUI"],"affected":[{"vendor":"Comfy-Org","product":"ComfyUI","versions":[{"version":"< 0.28.0","status":"affected"}]}],"references":["https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-pj59-g5vv-74q4","https://github.com/Comfy-Org/ComfyUI/pull/14734","https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:12:24.861Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/56xxx/CVE-2026-56671.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-56671","state":"PUBLISHED","datePublished":"2026-07-31T04:21:54.417Z","dateUpdated":"2026-07-31T23:19:15.408Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-06-22T16:39:01.043Z"},"containers":{"cna":{"title":"ComfyUI: Path traversal in /experiment/models/preview allows arbitrary image file read","descriptions":[{"lang":"en","value":"ComfyUI is a modular diffusion model GUI, api and backend with a graph/nodes interface. Prior to 0.28.0, get_model_preview in app/model_manager.py joins an unrestricted filename route capture to a selected model directory without a containment check, allowing an unauthenticated remote attacker to use traversal, encoded traversal, absolute paths, or an unbounded path_index to read image-decodable files and enumerate host paths. get_model_preview (app/model_manager.py) built the path with os.path.join(folder, filename) where filename is an unrestricted {filename:.*} route capture. Literal ../, percent-encoded %2e%2e%2f, and absolute paths all escaped the model directory; path_index was also unbounded. The target file is piped through Pillow and re-encoded as WEBP, so disclosure is limited to image-decodable files plus a file-existence/enumeration oracle (and internal-path leakage via path_index errors). This issue is fixed in version 0.28.0."}],"affected":[{"vendor":"Comfy-Org","product":"ComfyUI","versions":[{"version":"< 0.28.0","status":"affected"}]}],"references":[{"url":"https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-pj59-g5vv-74q4","name":"https://github.com/Comfy-Org/ComfyUI/security/advisories/GHSA-pj59-g5vv-74q4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/Comfy-Org/ComfyUI/pull/14734","name":"https://github.com/Comfy-Org/ComfyUI/pull/14734","tags":["x_refsource_MISC"]},{"url":"https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0","name":"https://github.com/Comfy-Org/ComfyUI/releases/tag/v0.28.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","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":"2026-07-31T04:21:54.417Z"},"source":{"advisory":"GHSA-pj59-g5vv-74q4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-31T23:18:53.402759Z","id":"CVE-2026-56671","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-31T23:19:15.408Z"}}]}}}