{"id":"CVE-2026-109294","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-109294","generatedAt":"2026-10-28T03:58:41.986Z","title":"Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by supplying compressed remote image URLs in chat messages.","description":"Open WebUI from 0.6.42 before 0.11.4 contains an uncontrolled resource consumption vulnerability that allows authenticated users to exhaust server memory by supplying compressed remote image URLs in chat messages. Attackers can point the image field at a host returning gzip-encoded responses, which get_image_base64_from_url decompresses unbounded, causing denial of service for all users.","published":"2026-10-12T17:17:23.000Z","lastModified":"2026-10-23T22:16:54.000Z","status":"Awaiting Analysis","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":7.1,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-400","CWE-409"],"affected":[],"epss":{"score":0.00307,"percentile":0.23319,"date":"2026-10-27","history":[{"date":"2026-10-13","score":0.00307,"percentile":0.21745}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.31%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-12T17:17:23.000Z","detail":{"score":"7.1","severity":"HIGH","publishedAt":"2026-10-12T17:17:22.800Z"},"summary":"New CVE, high severity (CVSS 7.1)."}],"references":[{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-w8j8-jv6j-3m47","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/open-webui-0.6.42-before-0.11.4-memory-exhaustion-via-compressed-remote-image","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-109294","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}