CVE WatchAug 5, 2026

CVE-2026-70488

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 aut

CVSS

4.3

Medium

EPSS

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KEV

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Exploit Today

0-100

Published: Aug 4, 2026 · Last modified: Aug 5, 2026 · CWE-639 · CWE-863

EPSS · 30d

Not enough EPSS history yet.

Technical description

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 objects belonged to that knowledge base. A user with write access to one knowledge base could delete directories and remove file embeddings from another knowledge base, causing documents to drop out of retrieval results and breaking chat-with-file for targeted documents without disclosing contents. This issue is fixed in 0.11.0.

Official references

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CVE-2026-50749—

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———Improper Authorization vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Any authenticated user can reject arbitrary pending edit-revisions without review permission due to a missing authorization check on the reject operation. Users are recommended to upgrade to version 2.0.2, which fixes the issue.5h CVE-2026-48912—

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———Improper Input Validation vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. A missing ownership check in the avatar-cleanup logic allows any authenticated user to delete other users' uploaded files by supplying their file URLs. Users are recommended to upgrade to version 2.0.2, which fixes the issue.5h CVE-2026-712516.5 MED

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——0Akaunting's shared download route (app/Http/Controllers/Common/Uploads.php::download(), reachable at uploads/{id}/download behind only generic auth middleware) fetched the requested Media record by ID with no verification that it belonged to the requesting portal customer's own company, allowing any authenticated portal customer to download any other company's uploaded files by guessing or enumerating media IDs. Fixed in commit 80ef6d3 (2026-07-12), which added an explicit ownership check comparing the media's parent record contact_id against the requesting user's own contact.9h CVE-2026-712476.5 MED

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——0Documenso's sign-field-with-token.ts, used by the live document-signing UI, allows a recipient with the ASSISTANT role to fetch and complete fields belonging to any later-or-equal-order, not-yet-signed recipient in the same envelope, with no restriction on field type. The handler upserts a Signature record tied to the target field's recipientId with no check that field.type is SIGNATURE and the acting recipient owns it. A newer V2 signing path (sign-envelope-field.ts) explicitly blocks assistants from completing SIGNATURE fields, and the project's own test suite comments confirm this guard is absent from the V1 path used here. In a sequential-signing document, an assistant recipient can therefore forge another signer's signature field.9h CVE-2026-712428.3 HIG

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——0Crater's NotePolicy checks only a blanket Bouncer ability (manage-all-notes / view-all-notes) with no company-ownership comparison, unlike InvoicePolicy and other sibling policies which additionally verify $user->hasCompany($model->company_id). NotesController's show(), update(), and destroy() actions authorize via $this->authorize('view notes'/'manage notes') without passing the target Note model, and Note's company-scoping (scopeWhereCompany) is applied only in the list endpoint, not in show/update/destroy. Any authenticated user of one company can read, edit, or delete another company's notes by ID. This is a distinct finding from the previously reported CustomerPolicy company-ownership omission (a different policy class and controller).9h CVE-2026-712347.5 HIG

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——0Documize Community's attachment download route (domain/attachment/endpoint.go, Download function, registered via AddPublic with no auth middleware) accepts a `secure` query parameter and grants access whenever the parameter is simply non-empty (len(secureToken) > 0), without comparing it to any server-stored value. Any non-empty string, such as ?secure=x, bypasses authentication entirely and allows downloading any organization's attachments. Sibling handlers in the same file (togglePublish, delete) correctly enforce session-based authorization, confirming this is an inconsistency rather than intended design.9h