{"id":"CVE-2026-54033","summary":"LibreChat: SSRF via User-Provided Custom Endpoint baseURL — no private IP validation on user-configured API base URLs","details":"LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.","aliases":["GHSA-gc9r-88c3-7qhq"],"modified":"2026-07-08T08:13:45.142342616Z","published":"2026-06-25T15:50:41.754Z","database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54033.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54033.json"},{"type":"ADVISORY","url":"https://github.com/danny-avila/LibreChat/security/advisories/GHSA-gc9r-88c3-7qhq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54033"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/danny-avila/librechat","events":[{"introduced":"0"},{"fixed":"b5a55b23a4b2f5f6428679b1ee358f18b02d51d8"}],"database_specific":{"cpe":"cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*","source":["AFFECTED_FIELD","CPE_RANGE"],"extracted_events":[{"introduced":"0"},{"fixed":"0.8.4-rc1"},{"last_affected":"0.8.3"}]}}],"versions":["chart-2.0.1","v0.8.3","chart-2.0.0","v0.8.3-rc2","chart-1.9.9","v0.8.3-rc1","chart-1.9.8","v0.8.2","chart-1.9.7","v0.8.2-rc3","chart-1.9.6","v0.8.2-rc2","chart-1.9.5","v0.8.2-rc1","v0.8.1","chart-1.9.4","v0.8.1-rc2","chart-1.9.3","v0.8.1-rc1","chart-1.9.2","v0.8.0","chart-1.9.1","v0.8.0-rc4","chart-1.9.0","v0.8.0-rc3","v0.8.0-rc2","v0.8.0-rc1","v0.7.9","librechat-1.8.9","v0.7.9-rc1","v0.7.8","v0.7.8-rc1","v0.7.7","v0.7.7-rc1","v0.7.6","v0.7.6-rc1","v0.7.5","v0.7.5-rc2","v0.7.5-rc1","v0.7.4","v0.7.4-rc1","v0.7.3","v0.7.3-rc2","v0.7.3-rc","v0.7.2","v0.7.1","v0.7.0","v0.6.10","v0.6.9","v0.6.6","v0.6.5","v0.6.1","v0.6.0","v0.5.9","v0.5.8","v0.5.7","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.8","v0.4.7","v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.3","v0.3.0","v0.2.0","v0.1.1","v0.1.0","v0.0.6","v0.0.3","v0.0.2","v0.0.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54033.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N"}]}