CVE-2026-70492 Open WebUI: Stored XSS via unescaped KaTeX render-error fallback in rendered messages

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, src/lib/components/chat/Messages/Markdown/KatexRenderer.svelte could store and render a chat message whose math block makes KaTeX fail with a stack overflow instead of a parse error. Th...

CVE-2026-70492

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, src/lib/components/chat/Messages/Markdown/KatexRenderer.svelte could store and render a chat message whose math block makes KaTeX fail with a stack overflow instead of a parse error. Th...

EUVD-2026-52923

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, src/lib/components/chat/Messages/Markdown/KatexRenderer.svelte could store and render a chat message whose math block makes KaTeX fail with a stack overflow instead of a parse error. Th...

CVE-2026-70492

Open WebUI had a stored XSS vulnerability in KaTeX render-fallback: between 0.10.0 and 0.11.0, KaTeX errors could be rendered via HTML (via {@html}) in rendered messages, allowing script execution in viewers’ browsers and risking session token theft and potential admin account takeovers. Affected...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-70491 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-70491 Source advisory: SNYK:PYTHON-OPENWEBUI-18600527...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-70491 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-70491 Source advisory: OSV:GHSA-3R7G-Q6CG-Q2VX...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-70491 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-70491 Source advisory: GHSA-3R7G-Q6CG-Q2VX...

Information Exposure

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Information Exposure via the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints. An attacker can access sensitive source code and potentially embedded secrets by making...

CVE-2026-70491 Open WebUI: Tool source code disclosed to read-only users via the tool list and get endpoints

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

openwebui-token-tracking (0.1.7) potentially affected by CVE-2026-70491 via open-webui (0.6.0)

open-webui PYPI version 0.6.0 is affected by a known vulnerability. The following packages have a transitive dependency on open-webui and may be impacted: - openwebui-token-tracking 0.1.7 Source cves: CVE-2026-70491 Source advisory: MEND:CVE-2026-70491...

CVE-2026-70491

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

CVE-2026-70491 Open WebUI: Tool source code disclosed to read-only users via the tool list and get endpoints

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

CVE-2026-70491 Open WebUI: Tool source code disclosed to read-only users via the tool list and get endpoints

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

EUVD-2026-52922

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. In 0.10.2 and earlier, the GET /api/v1/tools/, GET /api/v1/tools/list, and GET /api/v1/tools/id/id endpoints in backend/openwebui/routers/tools.py returned full Python tool source to authenticated non-admin...

CVE-2026-70491

Open WebUI vulnerability CVE-2026-70491 affects the self-hosted Open WebUI platform. In versions up to 0.10.2, the GET endpoints /api/v1/tools/, /api/v1/tools/list, and /api/v1/tools/id/{id} exposed full Python tool source to authenticated non-admin read-only users due to the interaction between ...

Incorrect Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Incorrect Authorization via the /resolveauthenticatedconnection process. An attacker can gain unauthorized interactive terminal access by using a valid, unexpired JWT for an account with insufficient approval...

CVE-2026-70490

Open WebUI (self-hosted AI platform) versions 0.8.8–0.11.0 contain a flaw where the terminal WebSocket route in backend/open_webui/routers/terminals.py authenticates its own first-message JWT and omits the verified-user role gate enforced on HTTP terminal routes. As a result, accounts with pendin...

EUVD-2026-52918

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...

CVE-2026-70490 Open WebUI: Unapproved accounts can open terminal sessions via a WebSocket auth path missing the role check

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.8 until 0.11.0, the terminal WebSocket route in backend/openwebui/routers/terminals.py authenticated its own first-message JWT and never applied the verified-user role gate that getverifieduser enforces...

Open WebUI: Instance-wide stall via automation recurrence rules that force multi-second parsing

Summary In every affected release, automation recurrence parsing anchors minutely and hourly rules at a fixed date of 2000-01-01 and then walks forward one interval at a time to find the next run. A single FREQ=MINUTELY rule therefore enumerates roughly a quarter-century of occurrences,...