# Model Context Protocol Registry vulnerabilities

Source: https://junglewise.ai/threats/technologies/registry  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 12 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/registry.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Model Context Protocol Registry: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-44428, was published on 14 May 2026.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 5 (0 critical, 0 exploited in the wild)

## About Model Context Protocol Registry

Library for registering and discovering Model Context Protocol implementations and resources.

## Latest Model Context Protocol Registry vulnerabilities

- [CVE-2026-44428: Model Context Protocol Registry OIDC token replay via shared audience](https://junglewise.ai/threats/cve-2026-44428-model-context-protocol-registry-oidc-token-replay-via-shared) (medium, CVSS 4.7, published 14 May 2026)
- [CVE-2026-44427: Model Context Protocol Registry open redirect in TrailingSlashMiddleware](https://junglewise.ai/threats/cve-2026-44427-model-context-protocol-registry-open-redirect-in) (medium, CVSS 4, published 14 May 2026)
- [CVE-2026-45781: Model Context Protocol Registry ownership bypass in OCI validator](https://junglewise.ai/threats/cve-2026-45781-model-context-protocol-registry-ownership-bypass-in-oci-validator) (low, CVSS 3.5, published 14 May 2026)
- [CVE-2026-44430: Model Context Protocol Registry SSRF via IPv6 Filter Bypass](https://junglewise.ai/threats/cve-2026-44430-model-context-protocol-registry-ssrf-via-ipv6-filter-bypass) (medium, CVSS 4, published 14 May 2026)
- [CVE-2026-44429: MCP Registry stored XSS in catalogue UI via websiteUrl](https://junglewise.ai/threats/cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl) (medium, CVSS 5.4, published 14 May 2026)

## Most severe Model Context Protocol Registry vulnerabilities

- [CVE-2026-44429: MCP Registry stored XSS in catalogue UI via websiteUrl](https://junglewise.ai/threats/cve-2026-44429-mcp-registry-stored-xss-in-catalogue-ui-via-websiteurl) (medium, CVSS 5.4, published 14 May 2026)
- [CVE-2026-44428: Model Context Protocol Registry OIDC token replay via shared audience](https://junglewise.ai/threats/cve-2026-44428-model-context-protocol-registry-oidc-token-replay-via-shared) (medium, CVSS 4.7, published 14 May 2026)
- [CVE-2026-44427: Model Context Protocol Registry open redirect in TrailingSlashMiddleware](https://junglewise.ai/threats/cve-2026-44427-model-context-protocol-registry-open-redirect-in) (medium, CVSS 4, published 14 May 2026)
- [CVE-2026-44430: Model Context Protocol Registry SSRF via IPv6 Filter Bypass](https://junglewise.ai/threats/cve-2026-44430-model-context-protocol-registry-ssrf-via-ipv6-filter-bypass) (medium, CVSS 4, published 14 May 2026)
- [CVE-2026-45781: Model Context Protocol Registry ownership bypass in OCI validator](https://junglewise.ai/threats/cve-2026-45781-model-context-protocol-registry-ownership-bypass-in-oci-validator) (low, CVSS 3.5, published 14 May 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Model Context Protocol technologies

- [Model Context Protocol Python SDK](https://junglewise.ai/threats/technologies/mcp-python-sdk): 4 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Model Context Protocol Registry vulnerabilities", https://junglewise.ai/threats/technologies/registry, 12 November 2026.