A simple mask-based transparency tool for ComfyUI. Turns black mask areas into fully transparent pixels while preserving white areas, with edge feathering support. Perfect for object extraction after semantic segmentation with SAM 3.1 models.
✨ Features
✅ Automatically makes black mask areas transparent, preserves original image in white areas
✅ Customizable Gaussian edge feathering to remove jagged edges
✅ Supports preserving or overwriting original alpha channel
✅ Fully compatible with RGB & RGBA images
✅ Ideal for extracting segmented objects after using SAM 3.1 models, removing unwanted background pixels
Defense-in-depth over GET→POST alone: reject the three CORS-safelisted
simple-form Content-Types (x-www-form-urlencoded, multipart/form-data,
text/plain) on 5 no-body POST handlers (snapshot/save,
manager/queue/{reset,start,update_comfyui}, manager/reboot) to block
<form method=POST> CSRF that bypasses method-only gating. Convert 10 pure
state-changing endpoints (fetch_updates, queue/{update_all,reset,start,
update_comfyui}, snapshot/{remove,restore,save}, comfyui_switch_version,
reboot) from GET to POST and split 5 config endpoints
(db_mode/preview_method/channel_url_list/policy/{component,update}) into
GET(read) + POST(write, JSON body). Emit the in_progress + done event pair
from the /manager/queue/install sync-enable fast-path so client UI
finalizes (previously only queue/start's empty worker done fired, leaving
item.restart unset and the Enable button visible after a successful enable).
Harden js/custom-nodes-manager.js completion path: await onQueueCompleted
with try/catch (surfaces silent turbogrid stale-item throws), replace the
{}.length == 0 no-op empty guard, set install_context before queue/install
to avoid a sync-completion race, wrap classList/updateCell in try/catch.
Resynchronize openapi.yaml with the converted routes (method → post, query
params → requestBody JSON schema, sibling post on 5 split endpoints).
Update 31 JS fetchApi call sites across 7 files; add
tests/test_csrf_content_type_helper.py covering 5 Content-Type cases via
aiohttp TestClient.
Reported-by: XlabAI Team of Tencent Xuanwu Lab
CVSS: 8.1 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H)
