CVE-2026-33682 json
Streamlit on Windows has Unauthenticated SSRF Vulnerability (NTLM Credential Exposure)
published 2026-03-25 7 mo ago modified 2026-07-13 3 mo ago also GHSA-7p48-42j8-8846 , PYSEC-2026-2285 , EUVD-2026-16444
- cvss
- 4.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- pypi streamlit 1.54.0
- snowflake streamlit 1.54.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 7 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| OSV | 3.1 | 4.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N |
| GitHub | 3.1 | 4.7 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | streamlit | <1.54.0 |
1.54.0 |
Affected products
- streamlit streamlit
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
github.com
/streamlit/streamlit/commit/23692ca70b2f2ac720c72d1feb4f190c9d6eed76
web, patch
-
github.com
/streamlit/streamlit/security/advisories/GHSA-7p48-42j8-8846
web, vendor-advisory, advisory
-
github.com
/streamlit/streamlit/releases/tag/1.54.0
web, product, release-notes, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-33682
advisory
-
github.com
/streamlit/streamlit
package
Sources
- CVE List CVE-2026-33682
- GitHub Advisory GHSA-7p48-42j8-8846
- NVD CVE-2026-33682
- OSV PYSEC-2026-2285
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