{"action":"Upgrade open-webui to 0.8.6 or later.","affected":[{"fixed":"0.8.6","introduced":"0"}],"component":"open-webui","cve_ids":["CVE-2026-28788"],"ecosystem":"PyPI","epss":0.02969,"exploited":false,"fixed_versions":["0.8.6"],"ghsa_id":"GHSA-jjp7-g2jw-wh3j","id":"tcs_01M5KFP4ZG5CANGQF94YZXT1TH","modified_at":"2026-07-13T16:42:38.388018547Z","published_at":"2026-03-27T15:34:26Z","references":["https://osv.dev/vulnerability/GHSA-jjp7-g2jw-wh3j","https://github.com/open-webui/open-webui/security/advisories/GHSA-jjp7-g2jw-wh3j","https://nvd.nist.gov/vuln/detail/CVE-2026-28788","https://github.com/open-webui/open-webui","https://github.com/open-webui/open-webui/releases/tag/v0.8.6"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-jjp7-g2jw-wh3j","url":"https://osv.dev/vulnerability/GHSA-jjp7-g2jw-wh3j"}],"summary":"Open WebUI's process_files_batch() endpoint missing ownership check, allows unauthorized file overwrite"}