CVE-2026-44429
medium
CVSS v3
5.4
CVSS v2
—
VIR risk
5.4
Description
MCP Registry vulnerable to stored XSS in catalogue UI via attribute-quote breakout in publisher-controlled `websiteUrl`
Predictions
Exploit likelihood
64%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: security-advisories@github.com — https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-rqv2-m695-f8j4
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | github.com/modelcontextprotocol/registry | <1.7.7 | 1.7.7 |
| GO | github.com/modelcontextprotocol/registry | < 1.7.7 | 1.7.7 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| lfprojects | mcp_registry | {"endExcluding":"1.7.7"} | 1.7.7 |
References
- https://github.com/modelcontextprotocol/registry/security/advisories/GHSA-rqv2-m695-f8j4
- https://nvd.nist.gov/vuln/detail/CVE-2026-44429
- https://github.com/modelcontextprotocol/registry/pull/1249
- https://github.com/modelcontextprotocol/registry/commit/78b7bbde07948049b916d76b4769faee461ff930
- https://github.com/modelcontextprotocol/registry
- https://github.com/modelcontextprotocol/registry/releases/tag/v1.7.7
- https://github.com/advisories/GHSA-rqv2-m695-f8j4
CWEs
CWE-79 CWE-116
Verify integrity in audit chain (admin only). AS-IS.