PT-2026-41195 · Unknown · Open-Webui

Published 2026-05-10 · Updated 2026-05-16 · CVE-2026-45400

Positive Technologies (AI Summary)

CVSS v3.1

8.5

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.5

Description A parsing discrepancy between the urlparse and requests libraries allows for a Server-Side Request Forgery (SSRF) bypass. The validate url() function uses urlparse to verify the hostname; however, urlparse and requests interpret certain URL structures differently. For example, in a URL like http://127.0.0.1:6666@1.1.1.1, urlparse identifies the hostname as 1.1.1.1 (a public address), while requests treats the backslash as a path character and connects to 127.0.0.1 (an internal address), bypassing the validation logic.

Recommendations Update to version 0.9.5.

Exploit

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

BDU:2026-07439

CVE-2026-45400

GHSA-8W7Q-Q5JP-JVGX

Affected Products

Open-Webui

References · 9

• 🔥 https://github.com/open-webui/open-webui/security/advisories/GHSA-8w7q-q5jp-jvgx · Exploit
• https://bdu.fstec.ru/vul/2026-07439 · Security Note
• https://osv.dev/vulnerability/GHSA-8w7q-q5jp-jvgx · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-45400 · Security Note
• https://github.com/open-webui/open-webui · Note
• https://github.com/open-webui/open-webui/releases/tag/v0.9.0 · Note
• https://t.me/CVEtracker/53965 · Telegram Post
• https://twitter.com/CVEnew/status/2055457514703998981 · Twitter Post
• https://t.me/cveNotify/163695 · Telegram Post