{"id":"CVE-2026-33682","aliases":["GHSA-7p48-42j8-8846","PYSEC-2026-2285"],"url":"https://o3.security/vulnerability/CVE-2026-33682","summary":"Streamlit on Windows has Unauthenticated SSRF Vulnerability (NTLM Credential Exposure)","details":"Streamlit is a data oriented application development framework for python. Streamlit Open Source versions prior to 1.54.0 running on Windows hosts have an unauthenticated Server-Side Request Forgery (SSRF) vulnerability. The vulnerability arises from improper validation of attacker-supplied filesystem paths. In certain code paths, including within the `ComponentRequestHandler`, filesystem paths are resolved using `os.path.realpath()` or `Path.resolve()` before sufficient validation occurs. On Windows systems, supplying a malicious UNC path (e.g., `\\\\attacker-controlled-host\\share`) can cause the Streamlit server to initiate outbound SMB connections over port 445. When Windows attempts to authenticate to the remote SMB server, NTLMv2 challenge-response credentials of the Windows user running the Streamlit process may be transmitted. This behavior may allow an attacker to perform NTLM relay attacks against other internal services and/or identify internally reachable SMB hosts via timing analysis. The vulnerability has been fixed in Streamlit Open Source version 1.54.0.","published":"2026-03-26T21:45:05.616Z","modified":"2026-07-15T01:48:58.633383784Z","cvss":{"score":4.7,"severity":"MEDIUM","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"streamlit","fixedVersion":"1.54.0"}],"fix":{"url":"https://github.com/streamlit/streamlit/commit/23692ca70b2f2ac720c72d1feb4f190c9d6eed76","label":"streamlit/streamlit@23692ca"},"references":[{"type":"WEB","url":"https://github.com/streamlit/streamlit/releases/tag/1.54.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33682.json"},{"type":"ADVISORY","url":"https://github.com/streamlit/streamlit/security/advisories/GHSA-7p48-42j8-8846"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33682"},{"type":"FIX","url":"https://github.com/streamlit/streamlit/commit/23692ca70b2f2ac720c72d1feb4f190c9d6eed76"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:48:58.633383784Z"}}