PYSEC-2026-3637 Open WebUI: Any authenticated user can stall a worker via a knowledge-search pattern that backtracks catastrophically

Summary The built-in knowledge search tools let a chat participant choose the pattern used to grep knowledge files. Patterns containing regex metacharacters were compiled with Python's backtracking re engine and run against every line of every reachable file, with no time limit anywhere on that...

PYSEC-2026-3645 Open WebUI: Any authenticated user can reach internal services and cloud metadata via NAT64-encoded URLs

Summary Open WebUI fetches user-supplied URLs on the server for RAG URL ingestion, URL-to-markdown conversion and web-search content retrieval, and decides whether a destination is allowed by asking whether its IP address is globally routable. That test operates on the literal IPv6 address and do...

PYSEC-2026-3653 Open WebUI: SSRF into internal services via unvalidated sub-resource requests in the Playwright web loader

Summary With the Playwright web loader enabled, Open WebUI opens user-submitted URLs in a real browser and validates the destination address before allowing the request. That check only ran for the top-level page request. Every other request the page issued was passed through unvalidated, so a pa...

Open WebUI: Any member with write access to a standard channel can edit or delete other members' messages

SummaryOn standard channels, the message update and delete handlers accepted any caller holding write access on the channel, without checking that the caller wrote the message. Write access is the same grant a member needs in order to post, so every ordinary participant in a shared channel could...

CVE-2026-72594 lobehub lobe-chat - Stored Cross-Site Scripting via Unrestricted SVG Avatar Upload

A stored cross-site scripting XSS vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar...

CVE-2026-72594 lobehub lobe-chat - Stored Cross-Site Scripting via Unrestricted SVG Avatar Upload

A stored cross-site scripting XSS vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar...

CVE-2026-72594 lobehub lobe-chat - Stored Cross-Site Scripting via Unrestricted SVG Avatar Upload

A stored cross-site scripting XSS vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar...

EUVD-2026-55164

A stored cross-site scripting XSS vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar...

CVE-2026-72594

A stored cross-site scripting XSS vulnerability in lobehub/lobe-chat through v2.2.13 allows a low-privileged authenticated user to inject arbitrary JavaScript into the application by uploading a crafted SVG file as a user avatar...

CVE-2026-72594

CVE-2026-72594 affects lobehub/lobe-chat up to v2.2.13. The vulnerability is a stored XSS where a low-privileged authenticated user can inject arbitrary JavaScript by uploading a crafted SVG as a user avatar. The avatar upload handler derives the stored file extension and S3 content type from the...

CVE-2026-72591 Koito - Authenticated Server-Side Request Forgery via Album Image URL Parameter

A server-side request forgery SSRF vulnerability in gabehf/Koito through v0.3.2 allows an authenticated user to make the server perform HTTP requests to arbitrary internal or external hosts by supplying a crafted imageurl value in the PATCH /apis/web/v1/album/id/image endpoint...

CVE-2026-72591

The CVE-2026-72591 entry describes a server-side request forgery (SSRF) in the gabehf/Koito project up to v0.3.2. An authenticated user can supply a crafted image_url in PATCH /apis/web/v1/album/{id}/image, causing the server to perform HTTP requests to arbitrary internal or external hosts. The i...

CVE-2026-72591 Koito - Authenticated Server-Side Request Forgery via Album Image URL Parameter

A server-side request forgery SSRF vulnerability in gabehf/Koito through v0.3.2 allows an authenticated user to make the server perform HTTP requests to arbitrary internal or external hosts by supplying a crafted imageurl value in the PATCH /apis/web/v1/album/id/image endpoint...

EUVD-2026-55215

A server-side request forgery SSRF vulnerability in gabehf/Koito through v0.3.2 allows an authenticated user to make the server perform HTTP requests to arbitrary internal or external hosts by supplying a crafted imageurl value in the PATCH /apis/web/v1/album/id/image endpoint...

CVE-2026-72591 Koito - Authenticated Server-Side Request Forgery via Album Image URL Parameter

A server-side request forgery SSRF vulnerability in gabehf/Koito through v0.3.2 allows an authenticated user to make the server perform HTTP requests to arbitrary internal or external hosts by supplying a crafted imageurl value in the PATCH /apis/web/v1/album/id/image endpoint...

CVE-2026-72591

A server-side request forgery SSRF vulnerability in gabehf/Koito through v0.3.2 allows an authenticated user to make the server perform HTTP requests to arbitrary internal or external hosts by supplying a crafted imageurl value in the PATCH /apis/web/v1/album/id/image endpoint...

CVE-2026-72583

A stored cross-site scripting XSS vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check...

CVE-2026-72583 fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload

A stored cross-site scripting XSS vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check...

EUVD-2026-55223

A stored cross-site scripting XSS vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check...

CVE-2026-72583 fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload

A stored cross-site scripting XSS vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check...