Technology · RubyGems
mcp (RubyGems) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 6 vulnerabilities in mcp (RubyGems): 0 in the last 7 days and 5 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-67432, was published on 29 July 2026.
- Last 7 days
- 0
- Last 90 days
- 5
- Critical, all time
- 0
- Exploited in the wild
- 0
Latest mcp (RubyGems) vulnerabilities
- CVE-2026-67432: Model Context Protocol Ruby SDK memory exhaustion in StreamableHTTPTransporthighCVSS 7.5EPSS 0.8%
- CVE-2026-67431: modelcontextprotocol ruby-sdk session hijacking in StreamableHTTPTransporthighCVSS 4EPSS 0.5%
- CVE-2026-67430: Model Context Protocol Ruby SDK memory exhaustion in StreamableHTTPTransportmediumCVSS 5.3EPSS 0.5%
- CVE-2026-63119: modelcontextprotocol ruby-sdk memory exhaustion in Stdio transportsmediumCVSS 6.2EPSS 0.2%
- CVE-2026-63118: modelcontextprotocol ruby-sdk DNS rebinding in StreamableHTTPTransportmediumCVSS 4EPSS 0.3%
- CVE-2026-33946: MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID ReplaymediumCVSS 4EPSS 0.5%
Most severe mcp (RubyGems) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-67432: Model Context Protocol Ruby SDK memory exhaustion in StreamableHTTPTransporthighCVSS 7.5EPSS 0.8%
- CVE-2026-67431: modelcontextprotocol ruby-sdk session hijacking in StreamableHTTPTransporthighCVSS 4EPSS 0.5%
- CVE-2026-63119: modelcontextprotocol ruby-sdk memory exhaustion in Stdio transportsmediumCVSS 6.2EPSS 0.2%
- CVE-2026-67430: Model Context Protocol Ruby SDK memory exhaustion in StreamableHTTPTransportmediumCVSS 5.3EPSS 0.5%
- CVE-2026-33946: MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream Hijacking via Session ID ReplaymediumCVSS 4EPSS 0.5%
- CVE-2026-63118: modelcontextprotocol ruby-sdk DNS rebinding in StreamableHTTPTransportmediumCVSS 4EPSS 0.3%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 5 | 0 | |
| 3 Aug 2026 | 0 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/rubygems-mcp.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "mcp (RubyGems) vulnerabilities", https://junglewise.ai/threats/technologies/rubygems-mcp, 28 September 2026.