CVE Explorer

CVE-2025-66414

MCP TypeScript SDK is the official TypeScript SDK for Model Context Protocol servers and clients. Prior to 1.24.0, The Model Context Protocol (MCP) TypeScript SDK does not enable DNS rebinding protection by default for HTTP-based servers. When an HTTP-based MCP server is run on localhost without authentication with StreamableHTTPServerTransport or SSEServerTransport and has not enabled enableDnsRebindingProtection, a malicious website could exploit DNS rebinding to bypass same-origin policy rest

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ce9f17d189ea58ea022addd6788a07a4e71530152a27c9e0dad5dac7f82f7e07

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"typescript-sdk","vendor":"modelcontextprotocol","versions":[{"status":"affected","version":"< 1.24.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:cf439b856ecd7b8d41beca8f459dcc2ff644c55c92aefc34dffe85bf57f7a11b · sha256:dc21a103411cf9c0… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":7.6,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:cf439b856ecd7b8d41beca8f459dcc2ff644c55c92aefc34dffe85bf57f7a11b · sha256:dc21a103411cf9c0… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-1188","description":"CWE-1188: Insecure Default Initialization of Resource","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:cf439b856ecd7b8d41beca8f459dcc2ff644c55c92aefc34dffe85bf57f7a11b · sha256:dc21a103411cf9c0… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/modelcontextprotocol/typescript-sdk/commit/09623e2aa5044f9e9da62c73d820a8250b9d97ed","tags":["x_refsource_MISC"],"url":"https://github.com/modelcontextprotocol/typescript-sdk/commit/09623e2aa5044f9e9da62c73d820a8250b9d97ed"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cf439b856ecd7b8d41beca8f459dcc2ff644c55c92aefc34dffe85bf57f7a11b · sha256:dc21a103411cf9c0… · /containers/cna/references/1

{"name":"https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-w48q-cv73-mx4w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/modelcontextprotocol/typescript-sdk/security/advisories/GHSA-w48q-cv73-mx4w"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:cf439b856ecd7b8d41beca8f459dcc2ff644c55c92aefc34dffe85bf57f7a11b · sha256:dc21a103411cf9c0… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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