CVE-2026-70489 Open WebUI: Instance-wide stall via automation recurrence rules that force multi-second parsing

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

EUVD-2026-52917

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

CVE-2026-70489 Open WebUI: Instance-wide stall via automation recurrence rules that force multi-second parsing

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

CVE-2026-70489

Technical details about CVE-2026-70489 are not publicly available in the provided documents. Monitor for updates.

CVE-2026-70489 Open WebUI: Instance-wide stall via automation recurrence rules that force multi-second parsing

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until 0.11.0, automation recurrence parsing in backend/openwebui/utils/automations.py anchored minutely and hourly rules at a fixed date of 2000-01-01 and then walked forward one interval at a time to...

Open WebUI: DNS Rebinding SSRF Bypass

Summary Open WebUI vetted user-supplied URLs by resolving the hostname once and rejecting private, loopback and link-local addresses, then let the HTTP client resolve that hostname again at connect time. An attacker who controls the authoritative DNS for a hostname they submit can answer with a...

Server-side Request Forgery (SSRF)

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Server-side Request Forgery SSRF through the process of hostname resolution and subsequent HTTP connection. An attacker can access internal network resources and sensitive metadata by submitting a specially...

CVE-2026-54020 Open WebUI: DNS Rebinding SSRF Bypass

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticat...

CVE-2026-54020

Open WebUI (self-hosted AI platform) contains a DNS rebinding SSRF vulnerability (CVE-2026-54020) affecting pre-0.11.0 behavior. An attacker who controls authoritative DNS for a submitted hostname could have validation return a public address while the connection later resolves to an internal add...

EUVD-2026-52900

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticat...

CVE-2026-54020

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticat...

CVE-2026-54020 Open WebUI: DNS Rebinding SSRF Bypass

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.11.0, Open WebUI resolved a hostname during URL validation and rejected private, loopback, and link-local addresses, but the HTTP clients resolved the hostname again at connection time. An authenticat...

Missing Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Missing Authorization via the chat completion, chat completed, and chat action endpoints when an inline model definition is used with attached knowledge metadata. An attacker can access the indexed content of...

GHSA-6XHV-RXHV-PWM4 Open WebUI: Cross-user file content disclosure via request-scoped direct model knowledge metadata

Summary Open WebUI lets a client define a model inline on a chat request instead of selecting a saved workspace model. The knowledge attached to such an inline model was used as-is, without checking that the caller can read what it points at. Any authenticated user who knows another user's file i...

GHSA-JXC9-XMC4-GR23 Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup

Summary A user with write access to one knowledge base could delete directories, and drop file embeddings, belonging to knowledge bases they do not control. The sync cleanup endpoint verified write access on the knowledge base named in the URL and then acted on the directory and file ids supplied...

Incorrect Authorization

Overview open-webui is an Open WebUI Affected versions of this package are vulnerable to Incorrect Authorization through the syncknowledgecleanup handler in the backend, which processes directory and file IDs from the request body without verifying their association with the specified knowledge...

CVE-2026-70488 Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objec...

CVE-2026-70488 Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objec...

CVE-2026-70488

CVE-2026-70488 – Open WebUI : In Open WebUI builds from 0.9.6 to 0.11.0, the sync cleanup endpoint (POST /api/v1/knowledge/{id}/sync/cleanup) did not properly constrain actions to the target knowledge base. The handler authenticated write access via the URL knowledge base, then acted on directory...

CVE-2026-70488 Open WebUI: Deletion of directories and file embeddings in other knowledge bases via sync cleanup

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objec...