{"id":"CVE-2026-87013","title":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform","summary":"Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/v1/folders/{id}/update/parent allowed a user to place a folder under itself or one of its descendants, while the fo…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-835"],"vendor":"openwebui","product":"open_webui","affected":["open_webui >= 0.10.0, < 0.11.1"],"patched":["open_webui 0.11.1"],"published":"2026-09-09","updated":"2026-09-15","sourceUpdated":"2026-09-15T16:09:34.607","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-87013","references":[{"url":"https://github.com/open-webui/open-webui/commit/23b3a69bc26839bfa74edd1be6bfa2568ae902f4","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/pull/28748","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/releases/tag/v0.11.1","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74","label":"security-advisories@github.com"},{"url":"https://github.com/open-webui/open-webui/security/advisories/GHSA-8r35-5x5r-hv74","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00279,"epssPercentile":0.20558,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-10T15:40:25.386895Z"},"ingestedAt":"2026-09-13T21:23:06.311Z","slug":"CVE-2026-87013","body":"## Overview\n\nOpen WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, POST /api/v1/folders/{id}/update/parent allowed a user to place a folder under itself or one of its descendants, while the folder tree walks used by DELETE /api/v1/folders/{id} and POST /api/v1/folders/{id}/read did not track visited folder identifiers. An authenticated user could persist a parent cycle and start a request that consumed CPU and memory indefinitely, with the condition remaining stored until repaired. This issue is fixed in version 0.11.1.\n\n## Affected\n\n- `open_webui >= 0.10.0, < 0.11.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `open_webui 0.11.1`","depth":"twilight","depthScore":36,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":50208,"id":"CVE-2026-87013","ts":1789059486583,"field":"exploit_available","old":"false","new":"true"}]}