CVE-2026-45303

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-45303
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45303.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-45303
Aliases
Published
2026-05-15T21:21:43Z
Modified
2026-07-08T08:12:34.799088801Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N CVSS Calculator
Summary
Open WebUI: Stored XSS via the HTML renedering view
Details

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.6.5, through the HTML rendering view, scripts can be injected and executed. The frontend provides a function to visualize the HTML content of a current chat. The content is embedded in an iFrame with the allow-scripts allow-forms allow-same-origin sandbox directive. This means that the content is placed in a sandbox but with permission to execute scripts and access the parent’s data (e.g., local storage). As a result, only a few functions are restricted (e.g., displaying an alert box), but in effect, the sandbox attribute is largely nullified. This vulnerability is fixed in 0.6.5.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45303.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ]
}
References

Affected packages

Git / github.com/open-webui/open-webui

Affected ranges

Type
GIT
Repo
https://github.com/open-webui/open-webui
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
07d8460126a686de9a99e2662d06106e22c3f6b6
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.6.5"
        }
    ]
}

Affected versions

v0.*
v0.1.102
v0.1.103
v0.1.104
v0.1.105
v0.1.106
v0.1.107
v0.1.108
v0.1.109
v0.1.110
v0.1.111
v0.1.112
v0.1.113
v0.1.114
v0.1.115
v0.1.116
v0.1.117
v0.1.118
v0.1.119
v0.1.120
v0.1.121
v0.1.122
v0.1.123
v0.1.124
v0.1.125
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.3.0
v0.3.1
v0.3.10
v0.3.11
v0.3.12
v0.3.13
v0.3.14
v0.3.15
v0.3.16
v0.3.17
v0.3.18
v0.3.19
v0.3.2
v0.3.20
v0.3.21
v0.3.22
v0.3.23
v0.3.24
v0.3.25
v0.3.26
v0.3.27
v0.3.28
v0.3.29
v0.3.3
v0.3.30
v0.3.31
v0.3.32
v0.3.33
v0.3.34
v0.3.35
v0.3.4
v0.3.5
v0.3.6
v0.3.7
v0.3.8
v0.3.9
v0.4.0
v0.4.1
v0.4.2
v0.4.3
v0.4.4
v0.4.5
v0.4.6
v0.4.7
v0.4.8
v0.5.0
v0.5.1
v0.5.10
v0.5.11
v0.5.12
v0.5.13
v0.5.14
v0.5.15
v0.5.16
v0.5.17
v0.5.18
v0.5.19
v0.5.2
v0.5.20
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-45303.json"