Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-w2vd-r3hr-w3bt
Vulnerability ID VCID-w2vd-r3hr-w3bt
Aliases CVE-2026-44721
GHSA-gf5m-wcrh-7928
Summary Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a stored cross-site scripting (XSS) vulnerability that allows any authenticated user with model creation permission (workspace.models) to execute arbitrary JavaScript in the browser of any other user (including admins) who views the malicious model in the chat UI. This vulnerability is fixed in 0.9.0.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00036 https://api.first.org/data/v1/epss?cve=CVE-2026-44721
cvssv3.1 7.3 https://github.com/open-webui/open-webui
generic_textual HIGH https://github.com/open-webui/open-webui
cvssv3.1 7.3 https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
generic_textual HIGH https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
ssvc Track* https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
cvssv3.1 7.3 https://nvd.nist.gov/vuln/detail/CVE-2026-44721
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-44721
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-44721
https://github.com/open-webui/open-webui
https://nvd.nist.gov/vuln/detail/CVE-2026-44721
GHSA-gf5m-wcrh-7928 https://github.com/advisories/GHSA-gf5m-wcrh-7928
GHSA-gf5m-wcrh-7928 https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/open-webui/open-webui
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-05-19T12:37:29Z/ Found at https://github.com/open-webui/open-webui/security/advisories/GHSA-gf5m-wcrh-7928
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-44721
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.11078
EPSS Score 0.00036
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:42:41.090210+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/44xxx/CVE-2026-44721.json 38.6.0