{"id":"PYSEC-2026-2285","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.","aliases":["CVE-2026-33682","GHSA-7p48-42j8-8846"],"modified":"2026-07-13T07:15:44.770297942Z","published":"2026-03-26T22:16:30.880Z","references":[{"type":"ADVISORY","url":"https://github.com/streamlit/streamlit/releases/tag/1.54.0"},{"type":"ADVISORY","url":"https://github.com/streamlit/streamlit/security/advisories/GHSA-7p48-42j8-8846"},{"type":"FIX","url":"https://github.com/streamlit/streamlit/commit/23692ca70b2f2ac720c72d1feb4f190c9d6eed76"}],"affected":[{"package":{"name":"streamlit","ecosystem":"PyPI","purl":"pkg:pypi/streamlit"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.54.0"}]}],"versions":["0.1","0.11.0","0.12.2","0.12.3","0.12.4","0.13.0","0.13.1","0.13.3","0.13.5","0.14.2","0.15.0","0.15.1","0.15.2","0.15.3","0.15.4","0.15.5","0.15.6","0.16.0","0.16.1","0.16.2","0.16.3","0.17.0","0.17.1","0.17.2","0.18.0","0.18.1","0.19.0","0.19.1","0.2","0.20.0","0.21.0","0.22.0","0.22.1","0.22.2","0.23.0","0.24.0","0.24.1","0.24.2","0.24.3","0.25.0","0.26.0","0.26.1","0.27.0","0.28.0","0.29.0","0.3","0.30.0","0.31.0","0.32.0","0.33.0","0.34.0","0.35.0","0.36.0","0.37.0","0.4","0.40.0","0.40.1","0.41.0","0.42.0","0.43.0","0.43.1","0.43.2","0.44.0","0.45.0","0.46.0","0.47.0","0.47.1","0.47.2","0.47.3","0.47.4","0.48.0","0.48.1","0.49.0","0.5","0.50.0","0.50.1","0.50.2","0.51.0","0.52.0","0.52.1","0.52.2","0.53.0","0.54.0","0.55.0","0.55.2","0.56.0","0.57.0","0.57.1","0.57.2","0.57.3","0.58.0","0.59.0","0.6","0.60.0","0.61.0","0.62.0","0.62.1","0.63.0","0.63.1","0.64.0","0.65.0","0.65.1","0.65.2","0.66.0","0.67.0","0.67.1","0.68.0","0.68.1","0.69.0","0.69.1","0.69.2","0.7","0.70.0","0.71.0","0.72.0","0.73.0","0.73.1","0.74.0","0.74.1","0.75.0","0.76.0","0.77.0","0.78.0","0.79.0","0.8","0.8.2","0.80.0","0.81.0","0.81.1","0.82.0","0.83.0","0.84.0","0.84.1","0.84.2","0.85.0","0.85.1","0.86.0","0.87.0","0.88.0","0.89.0","0.9.0","1.0.0","1.1.0","1.10.0","1.10.0rc1","1.10.0rc2","1.11.0","1.11.0rc1","1.11.1","1.11.1rc1","1.12.0","1.12.0rc1","1.12.0rc2","1.12.1","1.12.1rc1","1.12.2","1.12.2rc1","1.12.2rc2","1.13.0","1.13.0rc1","1.13.0rc2","1.14.0","1.14.0rc1","1.14.1","1.14.1rc1","1.15.0","1.15.1","1.15.2","1.15.2rc1","1.16.0","1.17.0","1.18.0","1.18.1","1.18.1rc1","1.19.0","1.2.0","1.20.0","1.21.0","1.22.0","1.23.0","1.23.1","1.24.0","1.24.1","1.25.0","1.26.0","1.26.1","1.27.0","1.27.1","1.27.2","1.28.0","1.28.1","1.28.2","1.29.0","1.3.0","1.3.1","1.30.0","1.31.0","1.31.1","1.32.0","1.32.1","1.32.2","1.32.2rc1","1.33.0","1.34.0","1.35.0","1.36.0","1.37.0","1.37.1","1.38.0","1.39.0","1.39.1","1.4.0","1.40.0","1.40.1","1.40.2","1.41.0","1.41.1","1.42.0","1.42.1","1.42.2","1.43.0","1.43.1","1.43.2","1.44.0","1.44.1","1.45.0","1.45.1","1.46.0","1.46.1","1.47.0","1.47.1","1.48.0","1.48.1","1.49.0","1.49.1","1.5.0","1.5.1","1.50.0","1.51.0","1.52.0","1.52.1","1.52.2","1.53.0","1.53.1","1.6.0","1.6.0rc3","1.6.0rc4","1.7.0","1.8.0","1.8.0rc1","1.8.1","1.8.1rc1","1.9.0","1.9.0rc1","1.9.1","1.9.1rc1","1.9.1rc2","1.9.2","1.9.2rc1"],"ecosystem_specific":{},"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/streamlit/PYSEC-2026-2285.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N"}]}