{"apiVersion":"1.0","identifier":"CVE-2026-81100","description":"tiger-gh-mcp-server started its MCP HTTP transport without enabling the host allow-list the underlying SDK provides. src/httpServer.ts called the shared httpServerFactory helper and never set the DNS-rebinding-protection option, so the transport accepted a request whatever host it named, making the locally reachable GitHub MCP endpoint drivable from a page in a visitor-s browser that pointed a name it controlled at the bound address. The fix passes the option explicitly alongside a dependency update; the update alone would not have closed it. The repository has published no release that brackets the fix, so the affected boundary is the commit preceding it.","publishedAt":"2026-08-27T17:20:52","lastModifiedAt":"2026-08-27T17:20:52","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-81100","cvssScore":6.8,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","epssProbability":0.0016,"riskScore":0.69,"affectedProduct":"tiger-gh-mcp-server","affectedVersions":"unknown","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-81100","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-81100","en":"https://www.redsauce.net/en/cves/CVE-2026-81100","fr":"https://www.redsauce.net/fr/cves/CVE-2026-81100","pt":"https://www.redsauce.net/pt/cves/CVE-2026-81100","de":"https://www.redsauce.net/de/cves/CVE-2026-81100","sk":"https://www.redsauce.net/sk/cves/CVE-2026-81100","el":"https://www.redsauce.net/el/cves/CVE-2026-81100"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-81100"}}