CVE Explorer

CVE-2026-45781

The MCP Registry provides MCP clients with a list of MCP servers, like an app store for MCP servers. Prior to 1.7.9, OCI ownership validation skips label-match check when upstream OCI registry returns HTTP 429, letting any authenticated publisher bind their io.github.<user>/* namespace to OCI images they do not control. internal/validators/registries/oci.go:104-119 fails open on http.StatusTooManyRequests: when the registry's anonymous fetch to the upstream OCI registry is rate-limited, Validate

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6d6e680f018455b40390be688583683a77eb323269e636c93c95642143fcf258

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"registry","vendor":"modelcontextprotocol","versions":[{"status":"affected","version":"< 1.7.9"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:00f170897120f4710e8b9bdd00540a89ed76e0a6c174f5373ec71289892f5fc9 · sha256:132022066244e5ef… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.5,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:00f170897120f4710e8b9bdd00540a89ed76e0a6c174f5373ec71289892f5fc9 · sha256:132022066244e5ef… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion

{"cweId":"CWE-636","description":"CWE-636: Not Failing Securely ('Failing Open')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:00f170897120f4710e8b9bdd00540a89ed76e0a6c174f5373ec71289892f5fc9 · sha256:132022066244e5ef… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"tags":["exploit"],"url":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-2v5f-5r6w-p67r"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:00f170897120f4710e8b9bdd00540a89ed76e0a6c174f5373ec71289892f5fc9 · sha256:132022066244e5ef… · /containers/adp/0/references/0

{"name":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-2v5f-5r6w-p67r","tags":["x_refsource_CONFIRM"],"url":"https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-2v5f-5r6w-p67r"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:00f170897120f4710e8b9bdd00540a89ed76e0a6c174f5373ec71289892f5fc9 · sha256:132022066244e5ef… · /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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