Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-44427

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. From 1.1.0 to 1.7.4, the TrailingSlashMiddleware in internal/api/server.go is vulnerable to an open redirect attack. An attacker can craft a URL with a protocol-relative path (e.g., //evil.com/) that, after trailing slash removal, results in a Location header of //evil.com — which browsers interpret as an absolute URL to an external domain. This vulnerability is fixed in 1.7.5.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:31fcf0320da8548f9e3b8bd5ac2732594a048a95629befc102baff62b23dcb83
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"registry","vendor":"modelcontextprotocol","versions":[{"status":"affected","version":">= 1.1.0, < 1.7.5"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f08a607ea79604fe9f4a5faabe77c5b969416c0850885adbcfbaf768e189c93f · sha256:c20fb7f3cf0347e1… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":0,"baseSeverity":"NONE","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f08a607ea79604fe9f4a5faabe77c5b969416c0850885adbcfbaf768e189c93f · sha256:c20fb7f3cf0347e1… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-601","description":"CWE-601: URL Redirection to Untrusted Site ('Open Redirect')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f08a607ea79604fe9f4a5faabe77c5b969416c0850885adbcfbaf768e189c93f · sha256:c20fb7f3cf0347e1… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["exploit"],"url":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-v8vw-gw5j-w7m6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f08a607ea79604fe9f4a5faabe77c5b969416c0850885adbcfbaf768e189c93f · sha256:c20fb7f3cf0347e1… · /containers/adp/0/references/0
{"name":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-v8vw-gw5j-w7m6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-v8vw-gw5j-w7m6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f08a607ea79604fe9f4a5faabe77c5b969416c0850885adbcfbaf768e189c93f · sha256:c20fb7f3cf0347e1… · /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.

← Back to CVE Explorer