CVE-2026-109291: Improper Neutralization of Input During Web Page Generation

Open WebUI from 0.6.33 before 0.11.4 contains a cross-site scripting vulnerability that allows authenticated users to execute script in victims' sessions by storing javascript: URLs in citation embedurl fields. Attackers can share a crafted chat whose citation, when clicked, is passed to...

PT-2026-110705

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.11.4 Description A stored cross-site scripting issue exists in the MarkdownInlineTokens.svelte component. The software renders markdown link URLs into anchor hrefs without validating the URL scheme. This allows...

CVE-2026-109288: Improper Neutralization of Input During Web Page Generation

Open WebUI before 0.11.4 contains a stored cross-site scripting vulnerability in MarkdownInlineTokens.svelte, which renders markdown link URLs into anchor hrefs without validating their scheme. Authenticated users can embed javascript: links in shared chats that, when clicked by a victim, steal t...

EulerOS 2.0 SP11 : open-iscsi (EulerOS-SA-2026-4350)

According to the versions of the open-iscsi packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : A stack buffer overflow vulnerability exists in the idbmrecinfoconfig function in open-iscsi iscsi- initiator-utils. An attacker can craft a...

CVE-2026-109293: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI from 0.11.0 before 0.11.4 contains an information disclosure vulnerability that allows authenticated non-admin users with tool export permission to obtain tool source code shared with them read-only. Attackers can request GET /api/v1/tools/export to retrieve the full Python source of...

CVE-2026-109294: Uncontrolled Resource Consumption

Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by supplying compressed remote image URLs in chat messages. Attackers can point the image field at a host returning gzip-encoded responses, whi...

Multiple vulnerabilities in Thelia 2.6.0 and 2.6.1

Overview Thelia versions 2.6.0 and 2.6.1 contain multiple vulnerabilities relating to file management, Smarty templating, module installation, and administrative workflows. Successful exploitation of these issues could enable remote code execution RCE, server-side template injection SSTI, stored...

CVE-2026-109296: Authorization Bypass Through User-Controlled Key

Open WebUI before 0.11.4 contains a missing authorization vulnerability that allows authenticated users to reach disabled model provider backends by supplying an explicit backend index. Attackers can pass the index as a path segment or query parameter on Ollama and OpenAI-compatible listing route...

PT-2026-110920

Name of the Vulnerable Software and Affected Versions HoloViz Panel versions 1.2.2 through 1.8.x Description An open redirect issue exists in panel/auth.py. Remote attackers can redirect users to external sites by providing an unvalidated next query parameter. The BasicLoginHandler and...

CVE-2026-109298: Uncontrolled Resource Consumption

Open WebUI 0.11.0 before 0.11.4 compiles user-chosen grep patterns for its knowledge and chat file search tools with a regex engine that expands nested counted repetition unbounded at compile time and caches the result. Authenticated users can have the model call grepknowledgefiles with short...

CVE-2026-109289: Insufficient Session Expiration

Open WebUI from 0.8.8 before 0.11.4 contains an improper authorization vulnerability that allows deactivated users to keep executing terminal commands through an already open terminal WebSocket. Because the terminal proxy route in terminals.py checks access only on the first message, deactivated...

CVE-2026-109284: Missing Authorization

Open WebUI from 0.11.0 before 0.11.4 contains an improper authorization vulnerability in the chat fork handler, which places forked chats in the source chat's folder without checking folder write access. Shared folder members downgraded to read-only can call POST /api/v1/chats/id/fork on chats th...

CVE-2026-109572: Missing Authorization

Open WebUI from 0.8.6 before 0.11.4 contains a privilege escalation vulnerability in the terminal proxy that allows authenticated users to reach the Terminals administrator API with the shared key attached. Attackers can send requests through /api/v1/terminals/serverid/path to list or stop other...

CVE-2026-109292: Exposure of Sensitive Information to an Unauthorized Actor

Open WebUI from 0.6.27 before 0.11.4 contains an information disclosure vulnerability that allows destination servers to obtain user session cookies by receiving the full browser cookie jar on OAuth-mode connections. Operators of OpenAI-compatible connections, OpenAPI tool servers or terminal...

CVE-2026-108950: Missing Authorization

Open Source Social Network OSSN through 10.1 contains a missing authorization vulnerability in ossnalbumpagehandler that allows unauthenticated attackers to download files via album/getphoto and album/getcover. Attackers can enumerate sequential file GUIDs to retrieve friends-only album photos an...

PT-2026-110715

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.11.0 through 0.11.3 Description The software uses a regex engine for its knowledge and chat file search tools that expands nested counted repetition unbounded at compile time and caches the result. Authenticated users can...

CVE-2026-109300: Improper Neutralization of Input During Web Page Generation

Open WebUI from 0.6.31 before 0.11.4 contains a stored cross-site scripting vulnerability in its Markdown renderer, which treats user-authored tool-call details blocks as tool output and mounts their embeds attribute in script-enabled iframes. Authenticated users can post crafted channel messages...

CVE-2026-109297: Uncontrolled Resource Consumption

Open WebUI 0.11.0 before 0.11.4 contains a denial of service vulnerability in the automation recurrence-rule validator, whose sub-daily frequency guard parses rule text more strictly than the calendar library that executes it. Users permitted to create automations can submit whitespace-folded rul...

PT-2026-110708

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.6.33 through 0.11.3 Description Authenticated users can execute scripts in other users' sessions by storing javascript: URLs within the citation embed url fields. An attacker can share a specially crafted chat; when a...

PT-2026-110710

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.11.0 through 0.11.3 Description Authenticated non-admin users with tool export permission can obtain the full Python source code of tools shared with them in read-only mode. This occurs when requesting the 'GET...