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CVE-2026-27896

Published: Feb 26, 2026Updated: Apr 14, 2026 Sources: CVE List NVD GHSA BDUCWE-178
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.3%
Top 82.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

MCP Go SDK Vulnerable to Improper Handling of Case Sensitivity

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-178CWE-436

Affected Products

github.com/modelcontextprotocol/go-sdkGoOSS Libraries
mcp go sdklfprojects
Mixed
AI / ML / notebook-mlops
go-sdkmodelcontextprotocol
Mixed
AI / ML / ai-agent-tooling
MCP Go SDKСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
gopackage-ecosystemOSS Libraries
lfprojectsoss-projectAI / MLaka mlflow, valkey, model context protocol servers, mcp servers
modelcontextprotocoloss-projectAI / MLaka mcp, model context protocol
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf

Exploitability

Official Patch Available

References

https://github.com/modelcontextprotocol/go-sdk/security/advisories/GHSA-wvj2-96wp-fq3f
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-27896
nvd.nist.gov
https://github.com/modelcontextprotocol/go-sdk/commit/7b8d81c264074404abdf5aa16e2cf0c2d9c64cc0
github.com
and 4 more references View all →

Timeline

Published
Feb 26, 2026
Last Updated
Apr 14, 2026

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