CVE-2026-56673 ComfyUI: Path traversal in LoadImage via the /prompt API allows arbitrary file existence probing and image exfiltration
Unauthenticated attackers can probe arbitrary host paths and exfiltrate image files via crafted workflow inputs in ComfyUI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-56673?
CVE-2026-56673 is a high-severity path traversal vulnerability in Comfy-Org ComfyUI, published on 31 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-22
Which versions are affected by CVE-2026-56673?
How do I fix CVE-2026-56673?
No fix has been published for CVE-2026-56673 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-56673 being exploited?
There is no known exploitation of CVE-2026-56673 in the wild and no public exploit code.
Sources
Also known as GHSA-rvxv-29p8-pxgq.