NIXPKGS-2026-2300
GitHub issue
published 25 minutes ago
MCP Python SDK: WebSocket server transport does not support Host/Origin validation
Permalink
CVE-2026-59950
7.6 HIGH
- CVSS version (CVSS): 4.0
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Attack Requirement (AT): Present (P)
- Privileges Required (PR): None (N)
- User Interaction (UI): Passive (P)
- Vulnerable System Impact Confidentiality (VC): High (H)
- Vulnerable System Impact Integrity (VI): High (H)
- Vulnerable System Impact Availability (VA): None (N)
- Subsequent System Impact Confidentiality (SC): None (N)
- Subsequent System Impact Integrity (SI): None (N)
- Subsequent System Impact Availability (SA): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Attack Requirement (MAT): Present (P)
- Modified Privileges Required (MPR): None (N)
- Modified User Interaction (MUI): Passive (P)
- Modified Vulnerable System Impact Confidentiality (MVC): High (H)
- Modified Vulnerable System Impact Integrity (MVI): High (H)
- Modified Vulnerable System Impact Availability (MVA): None (N)
- Modified Subsequent System Impact Confidentiality (MSC): Negligible (N)
- Modified Subsequent System Impact Integrity (MSI): Negligible (N)
- Modified Subsequent System Impact Availability (MSA): Negligible (N)
- Safety (S): Not Defined (X)
- Automatable (AU): Not Defined (X)
- Recovery (R): Not Defined (X)
- Value Density (V): Not Defined (X)
- Vulnerability Response Effort (RE): Not Defined (X)
- Provider Urgency (U): Not Defined (X)
- Confidentiality Req. (CR): Not Defined (X)
- Integrity Req. (IR): Not Defined (X)
- Availability Req. (AR): Not Defined (X)
- Exploit Maturity (E): Not Defined (X)
by @erictapen Activity log
- Created suggestion
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@erictapen
ignored
18 packages
- python314Packages.aliyun-python-sdk-config
- python313Packages.aliyun-python-sdk-config
- python314Packages.aliyun-python-sdk-alimt
- python313Packages.aliyun-python-sdk-alimt
- python314Packages.aliyun-python-sdk-dbfs
- python314Packages.aliyun-python-sdk-core
- python313Packages.aliyun-python-sdk-dbfs
- python313Packages.aliyun-python-sdk-core
- python314Packages.aliyun-python-sdk-sts
- python314Packages.aliyun-python-sdk-kms
- python314Packages.aliyun-python-sdk-iot
- python314Packages.aliyun-python-sdk-cdn
- python313Packages.aliyun-python-sdk-sts
- python313Packages.aliyun-python-sdk-kms
- python313Packages.aliyun-python-sdk-iot
- python313Packages.aliyun-python-sdk-cdn
- python314Packages.bce-python-sdk
- python313Packages.bce-python-sdk
- @erictapen accepted
- @erictapen published on GitHub
MCP Python SDK: WebSocket server transport does not support Host/Origin validation
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https://github.com/modelcontextprotocol/python-sdk/pull/2992 x_refsource_MISC
python-sdk
- ==< 1.28.1