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SCA: security update for github.com/modelcontextprotocol/registry (GHSA-2v5f-5r6w-p67r)

low Tenable Self-Hosted Container Security Plugin ID 442162

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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, ValidateOCI returns nil and the
 publish is accepted without ever running the io.modelcontextprotocol.server.name label-match check at
 lines 122-141. That label check is the only cross-system ownership proof the registry applies to OCI
 packages — every other registry type (NPM, PyPI, NuGet, MCPB) treats a non-200 upstream response as a hard
 error. This vulnerability is fixed in 1.7.9. (CVE-2026-45781)

Solution

Update the github.com/modelcontextprotocol/registry library and its related packages to version 1.7.9 or later.

See Also

https://github.com/advisories/GHSA-2v5f-5r6w-p67r

Plugin Details

Severity: Low

ID: 442162

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 5/19/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS Score Source: CVE-2026-45781

CVSS v3

Risk Factor: Low

Base Score: 3.5

Temporal Score: 3.1

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 5/19/2026

Vulnerability Publication Date: 5/14/2026

Reference Information

CVE: CVE-2026-45781

cwe: CWE-636