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CVE-2026-56673— ComfyUI: Path traversal in LoadImage via the /prompt API allows arbitrary file existence probing and image exfiltration

Quick assessment

Affected
Comfy-Org ComfyUI
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ComfyUI 是一个基于图形和节点接口的模块化扩散模型 GUI、API 和后端。在 0.28.0 版本之前， 和 函数将工作流控制的注解文件名与基础目录连接时，未进行目录包含检查，导致未经身份验证的攻击者可以通过构造的 POST /prompt 请求，利用 LoadImage 或相关节点探测任意主机路径，并通过 /view 接口泄露图像格式文件。LoadImage 定义了 方法，导致执行引擎跳过了 COMBO（输入目录）类型的验证。受影响的节点包括：LoadImage、LoadImageMask、LoadImag

CVSS 7.5 · High EPSS 0.63% · P48

Affected Version Matrix 1

VendorProduct Version RangeStatus
Comfy-Org ComfyUI < 0.28.0 affected
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I. Basic Information for CVE-2026-56673

Vulnerability Information
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Vulnerability Title
ComfyUI: Path traversal in LoadImage via the /prompt API allows arbitrary file existence probing and image exfiltration
Source: CVE Program / CVE List V5
Vulnerability Description
ComfyUI is a modular diffusion model GUI, API, and backend with a graph-and-node interface. Prior to 0.28.0, folder_paths.get_annotated_filepath and exists_annotated_filepath join workflow-controlled annotated filenames to a base directory without a containment check, allowing an unauthenticated crafted POST /prompt workflow using LoadImage or sibling nodes to probe arbitrary host paths and exfiltrate image-format files through /view. LoadImage defines a VALIDATE_INPUTS method, which causes the execution engine to skip COMBO (input-directory) validation. Affected nodes include LoadImage, LoadImageMask, LoadImageOutput, LoadAudio, LoadLatent, LoadVideo, and Load3D. This issue is fixed in version 0.28.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Comfy-Org ComfyUI < 0.28.0 -

II. Public POCs for CVE-2026-56673

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Qwen3.6-35B-A3B · 10230 chars
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III. Intelligence Information for CVE-2026-56673

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Patches & Fixes for CVE-2026-56673 (1)

Vendor Advisories for CVE-2026-56673 (1)

Other References for CVE-2026-56673 (1)

Same Patch Batch · Comfy-Org · 2026-07-31 · 5 CVEs total

CVE-2026-68771 9.8 CRITICAL ComfyUI 0.23.0 Unauthenticated RCE via LoadTrainingDataset Pickle Deserialization
CVE-2026-56670 8.2 HIGH ComfyUI: Stored XSS via SVG file upload on the /view endpoint
CVE-2026-56672 8.2 HIGH ComfyUI: Stored XSS via /userdata/{file} due to Missing Content-Type Sanitization
CVE-2026-56671 7.5 HIGH ComfyUI: Path traversal in /experiment/models/preview allows arbitrary image file read

IV. Related Vulnerabilities

Same product: ComfyUI
Same vendor: Comfy-Org
Same weakness: CWE-22

V. Comments for CVE-2026-56673

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