EUVD-2026-39022

Ghost: Member existence leak via magic link sign-in response...

CVE-2026-70594

Ghost Admin did not invalidate existing sessions on login from version 2.2.0 through 6.54.1, enabling potential session fixation if another vulnerability on the same Ghost Admin domain was present. The issue could allow an attacker to hijack an authenticated session; exploitation would require an...

CVE-2026-70594 Ghost: Session Fixation in Ghost Admin

Ghost is a Node.js content management system. From 2.2.0 until 6.54.1, Ghost Admin did not invalidate existing sessions on login which could have allowed for session fixation attacks. Successful exploitation would have required another vulnerability on the same domain where Ghost Admin was hosted...

EUVD-2026-52977

Ghost is a Node.js content management system. From 0.10.0 until 6.54.1, a vulnerability in custom themes allowed a staff user to write files outside of the uploads directory. This could be used to alter the behavior of the installation through custom theme upload path traversal in LocalStorageBas...

Ghost: Database Backup Path Traversal

Impact An Administrator-level user could remotely overwrite certain files on the filesystem leading to integrity and availability issues. Vulnerable versions This vulnerability is present in Ghost from 1.20.1 up to v6.54.0. Patches v6.54.1 contains a fix for this issue. How to update For...

CVE-2026-70592

Ghost is a Node.js content management system. From 1.20.1 until 6.54.1, an Administrator-level user could remotely overwrite certain files on the filesystem through the database backup filename, leading to integrity and availability issues. The database export endpoint failed to reject path...

CVE-2026-70590

Ghost CMS (Node.js) prior to version 6.54.1 allowed staff-level users to leak other staff password hashes via the Ghost Admin API. The underlying issue is exposure of authentication data, enabling offline password guessing with potential account takeover; however, Device Verification was noted as...

EUVD-2026-39023

Ghost: Mobiledoc image-size fetch SSRF...

CVE-2026-45084

OpenSIPS is a Session Initiation Protocol SIP server implementation. Versions 3.4.0 through 3.6.5 contain a denial of service vulnerability in the presence module. When the presence module's handlepublish function processes a SIP PUBLISH request with an Event: presence header and a message body...

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...

CVE-2026-70489

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...

Ghost: Archived Offers can be Redeemed

Impact A missing validation check allowed users to redeem subscription offers that were no longer active. Vulnerable versions This vulnerability is present in Ghost from v4.22.0 up to v6.54.0. Patches v6.54.1 contains a fix for this issue. How to update For self-hosters using Docker, find Docker'...

CVE-2026-70588

CVE-2026-70588 affects the Ghost CMS (Node.js). From 5.26.0 through 6.54.1, the Universal Import feature in Ghost Admin did not properly sanitize imported content, causing an XSS in post content. The issue has been fixed in version 6.54.1. Affected versions should upgrade to 6.54.1 or later to re...

Open WebUI: A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder

Summary A user granted write access to a shared chat folder could permanently delete chats and messages belonging to the folder's owner. Deleting a folder cascades into the owner's chats and the entire subfolder subtree, and the deletion handler required only write access on subfolders instead of...

CVE-2026-70494 Open WebUI: A folder write-collaborator can permanently delete the owner's chats by deleting a shared subfolder

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.0, the DELETE /api/v1/folders/id handler in backend/openwebui/routers/folders.py allowed a user granted write access to a shared chat folder to permanently delete chats and messages...

CVE-2026-70494

Open WebUI vulnerability CVE-2026-70494 affects versions 0.10.0–0.11.0 where the DELETE /api/v1/folders/{id} handler allowed a collaborator with write access to a shared folder to permanently delete chats/messages of the folder owner. The issue arises because the subfolder check accepted any inhe...

CVE-2026-70493 Open WebUI: Any authenticated user can stall a worker via a knowledge-search pattern that backtracks catastrophically

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the built-in knowledge search path in backend/openwebui/tools/knowledgefs.py and backend/openwebui/tools/builtin.py let a chat participant choose a pattern used to grep knowledge files...

CVE-2026-70490

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...

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...