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Security releases

Open-webui

CVE-2026-109290: Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated users to execute scrip

CVE-2026-109290 Oct 12, 2026 Source: Vendor

Open WebUI from 0.11.1 before 0.11.4 contains a stored cross-site scripting vulnerability in DocxPreview.svelte that allows authenticated users to execute script by uploading crafted DOCX attachments. Attackers can embed an OOXML altChunk HTML part or script-scheme hyperlink to steal a previewing administrator's session token from local storage and take over the instance.

Source of record The credited names below are quoted verbatim from the vendor's own advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-109290
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Credited

2 lines
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CVE-2026-109290 BR2026-0000-026826 unclaimed
Credited as Observerkay
CVE-2026-109290 BR2026-0000-026827 unclaimed
Credited as Classic298