{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109290 exists.","fix":"No fix has been published for CVE-2026-109290 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-109290 is a high-severity cross-site scripting vulnerability in open-webui, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-109290 and fix it if it is affected.\n\nWhat it is: CVE-2026-109290 is a high-severity cross-site scripting vulnerability in open-webui, published on 12 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109290 exists.\n\nAffected product: open-webui. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-109290/ (Markdown: https://insights.sbomify.com/CVE-2026-109290/index.md)","id":"CVE-2026-109290","markdown":"https://insights.sbomify.com/CVE-2026-109290/index.md","name":"CVE-2026-109290","record":{"aliases":["GHSA-39h3-jjqw-8pch","GHSA-f9xp-mfmq-x6cg"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Open WebUI","requires_auth":"low_privilege","summary":"Authenticated users can execute scripts via crafted DOCX uploads to steal admin session tokens and take over the instance.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.4,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-1021","name":"Improper Restriction of Rendered UI Layers or Frames"}],"description":"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Open WebUI 0.11.1 before 0.11.4 Stored XSS via DOCX Preview","id":"CVE-2026-109290","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Open WebUI 0.6.33 before 0.11.4 Stored XSS via Citation embed_url","id":"CVE-2026-109291"},"packages":[],"prev":{"headline":"Open WebUI 0.8.8 before 0.11.4 Improper Session Revocation via Terminal WebSocket","id":"CVE-2026-109289"},"products":["open-webui"],"published":"2026-10-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-23","vendors":["open-webui"]},"summary":"Authenticated users can execute scripts via crafted DOCX uploads to steal admin session tokens and take over the instance.","url":"https://insights.sbomify.com/CVE-2026-109290/"}