EUVD-2026-81074
GHSA-xhvx-vf8p-rh4x
Severity by source
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Local vector via loading a crafted workflow requires user interaction (UI:R) but no privileges (PR:N); arbitrary file write to startup files yields full code execution, so C/I/A:H, S:U on the same host.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
ComfyUI before 0.30.0 fails to sanitize folder_name input in dataset save nodes, allowing attackers to write files to arbitrary paths outside the output directory. Attackers can load a crafted workflow that writes attacker-controlled content to arbitrary locations, enabling code execution through modified startup files or package initializers.
AnalysisAI
Arbitrary file write via path traversal in ComfyUI before 0.30.0 lets an attacker place attacker-controlled content anywhere on the host filesystem by supplying a crafted folder_name to the dataset save nodes. According to the vendor vector, no authentication is required (PR:N), but exploitation requires user interaction in the form of the victim loading and running a malicious workflow (UI:P); code execution does not occur immediately and instead follows when the written startup file or package initializer is subsequently loaded. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a victim to load and execute an attacker-crafted ComfyUI workflow whose dataset save node supplies an unsanitized folder_name containing path-traversal sequences (reference: comfy_extras/nodes_dataset.py lines 303-318 in v0.24.0). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | This is a genuine priority for anyone running ComfyUI, though not an unauthenticated remote 'internet-worm' class flaw. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to ComfyUI 0.30.0 or later, which contains the corrected path handling in comfy_extras/nodes_dataset.py (patch reference: https://github.com/Comfy-Org/ComfyUI/blob/v0.30.0/comfy_extras/nodes_dataset.py; vulnerability detail: https://www.vulncheck.com/advisories/comfyui-before-0.30.0-path-traversal-via-dataset-save-nodes). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory every ComfyUI instance and identify any running a version earlier than 0.30.0; because publicly available exploit code exists, instruct users not to import or execute workflows from untrusted sources and block untrusted workflow uploads where possible. …
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External POC / Exploit Code
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