CVE-2026-45318

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.sheettohtml output rendered via @html excelHtml without DOMPurify ...

CVE-2026-44549

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

CVE-2026-44549

CVE-2026-44549 details (Open WebUI) : Open WebUI before 0.8.0 previews Excel attachments unsafely. The XLSX payload can trigger sheet_to_html to embed an XSS payload, which is then inserted into the DOM via @html without sanitization, enabling stored XSS. The issue is resolved in version 0.8.0. R...

CVE-2026-44549 Open WebUI: Stored XSS in excel file preview

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

EUVD-2026-30639

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

CVE-2026-44549 Open WebUI: Stored XSS in excel file preview

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

CVE-2026-44549

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.0, Excel file attachments are previewed in an unsafe way. A crafted XLSX file payload can be used to cause the sheetjs function sheettohtml to embed an XSS payload into the generated...

EUVD-2026-30659

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.sheettohtml output rendered via @html excelHtml without DOMPurify ...

CVE-2026-45318 Open WebUI: Stored XSS via unsanitized Office/Excel/DOCX file preview rendering ({@html} without DOMPurify)

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.sheettohtml output rendered via @html excelHtml without DOMPurify ...

CVE-2026-45318

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.sheettohtml output rendered via @html excelHtml without DOMPurify ...

Open WebUI 跨站脚本漏洞

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted WebUI that is open source. Versions of Open WebUI prior to 0.8.0 had a cross-site scripting vulnerability. This vulnerability stemmed from the insecure preview of Excel file attachments. The specially crafted XLSX file paylo...

GHSA-HCWP-82G6-8WXC Open WebUI has stored XSS via unsanitized Office/Excel/DOCX file preview rendering ({@html} without DOMPurify)

Related advisory This advisory tracks a regression of the original Excel-preview XSS that was publicly disclosed and patched under GHSA-jwf8-pv5p-vhmc patched in v0.8.0. The same root cause — XLSX.utils.sheettohtml output rendered via @html excelHtml without DOMPurify — was reintroduced sometime...

SUSE CVE-2023-7101

Spreadsheet::ParseExcel version 0.65 is a Perl module used for parsing Excel files. Spreadsheet::ParseExcel is vulnerable to an arbitrary code execution ACE vulnerability due to passing unvalidated input from a file into a string-type “eval”. Specifically, the issue stems from the evaluation of...

Security Updates for Microsoft Excel Products C2R (May 2026)

The Microsoft Excel Products are missing security updates. It is, therefore, affected by multiple vulnerabilities: - Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally. CVE-2026-40359 - Out-of-bounds read in Microsoft Office Excel allows an unauthoriz...

CVE-2026-40360

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...

CVE-2026-40359

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-40362

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally...

CVE-2026-40902

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the XLSX reader's ColumnAndRowAttributes::readRowAttributes method reads row numbers from XML attributes without validating them against the spreadsheet maximum row...

CVE-2026-40902 PhpSpreadsheet: CPU Denial of Service via Unbounded Row Number in XLSX Row Dimensions

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the XLSX reader's ColumnAndRowAttributes::readRowAttributes method reads row numbers from XML attributes without validating them against the spreadsheet maximum row...

EUVD-2026-29642

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally...