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NVD Vulnerability Details :
CVE-2026-45318
Received
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-15 May, 2026 | 22:16
Updated At-15 May, 2026 | 22:16

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.3, his advisory tracks a regression of the original Excel-preview XSS (CVE-2026-44549). The same root cause — XLSX.utils.sheet_to_html() output rendered via {@html excelHtml} without DOMPurify — was reintroduced sometime after v0.8.0 and is exploitable again This vulnerability is fixed in 0.9.3.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 5.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CPE Matches
Weaknesses
CWE IDTypeSource
CWE-79Primarysecurity-advisories@github.com
CWE ID: CWE-79
Type: Primary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/open-webui/open-webui/security/advisories/GHSA-hcwp-82g6-8wxcsecurity-advisories@github.com
N/A
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-hcwp-82g6-8wxc
Source: security-advisories@github.com
Resource: N/A
Change History
0Changes found
Details not found