CVE-2026-55197: Authorization Bypass Through User-Controlled Key

Hermes WebUI before 0.51.443 contains a broken access control vulnerability in the /api/session endpoint that allows authenticated users to disclose cross-profile session transcripts. Attackers can bypass profile boundary checks by directly querying session IDs belonging to other profiles via GET...

CVE-2026-55196: Missing Authentication for Critical Function

Hermes WebUI before 0.51.409 contains an authentication bypass vulnerability in passkey registration endpoints that allows unauthenticated remote attackers to register arbitrary passkeys. When HERMESWEBUIPASSKEY=1 is enabled with no existing credentials, POST /api/auth/passkey/register/options an...

PT-2026-50482

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description An authenticated user can attach arbitrary file id values to their own chat messages because the system fails to verify if the user owns or has read access to those files. By sharing the chat and...

PT-2026-50486

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description A path traversal issue exists in the cache file serving endpoint '/cache/path:path' that allows authenticated users with the role of user or admin to read files from sibling directories outside th...

PT-2026-56895

Name of the Vulnerable Software and Affected Versions Open WebUI versions 0.9.6 through 0.9.9 Description The sanitize proxy path function in backend/open webui/routers/terminals.py fails to properly normalize proxy paths by decoding them only eight times. This allows a nine-times percent-encoded...

CVE-2026-25087 vulnerabilities

Vulnerabilities for packages: open-webui...

CVE-2026-48156 vulnerabilities

Vulnerabilities for packages: open-webui...

CVE-2026-48155 vulnerabilities

Vulnerabilities for packages: open-webui...

GHSA-RGXP-2HWP-JWGG vulnerabilities

Vulnerabilities for packages: open-webui...

CVE-2026-49973

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...

CVE-2026-49973

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...

CVE-2026-49973 Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...

CVE-2026-49973

CVE-2026-49973 affects Hermes WebUI prior to version 0.51.358. The issue is an improper access control in the settings API that allows unauthenticated remote attackers to hijack the initial setup by posting to the /api/settings endpoint using the _set_password parameter without origin restriction...

CVE-2026-49973 Hermes WebUI < 0.51.358 Unauthenticated Password Takeover via /api/settings

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...

EUVD-2026-36306

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...

CVE-2026-54011

creationtimestamp| type| source ---|---|--- 2026-06-11 18:58:03+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-v8qj-hxv7-mgvv 2026-07-10 11:07:07+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mqbyyvqikn23...

CVE-2026-54010

creationtimestamp| type| source ---|---|--- 2026-06-11 18:57:21+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-vrhc-3fr6-pc3c 2026-07-18 17:37:06+00:00| seen| https://bsky.app/profile/cyberhub.blog/post/3mqwsjmkf4t2m...

CVE-2026-54007

creationtimestamp| type| source ---|---|--- 2026-06-11 18:56:24+00:00| published-proof-of-concept| https://github.com/open-webui/open-webui/security/advisories/GHSA-3vv5-8xxp-4f55...

Arbitrary File Write

open-webui/open-webui is vulnerable to an arbitrary file write. The vulnerability is due to improper handling of file paths in the downloadmodel endpoint on Windows, which allows an attacker to manipulate file paths and write files to arbitrary locations on the server...

CVE-2026-49973: Missing Authentication for Critical Function

Hermes WebUI before version 0.51.358 contains an improper access control vulnerability that allows unauthenticated remote attackers to hijack initial setup by submitting the setpassword parameter to the settings API endpoint without any network origin restriction. Attackers on any reachable netwo...