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Medium RHSA-2026:54874 1 CVE

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published Sep 5, 2026 · Updated Sep 9, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 tempo3.0 0:3.0.3-0.1.hum1

Vulnerabilities 1

  • Medium 6.8
    CVE-2026-81092

    mcp-go before 0.56.0 Missing Host Header Validation Enables DNS Rebinding

    mcp-go accepted requests on its HTTP transports without checking the Host header. StreamableHTTPServer.ServeHTTP in server/streamable_http.go and SSEServer.ServeHTTP in server/sse.go served any request arriving over a loopback connection regardless of the hos…

    mark3labs mcp-go

References

  • article
    https://images.redhat.com/
  • report
    https://access.redhat.com/security/cve/CVE-2026-81092
  • article
    https://access.redhat.com/security/updates/classification/
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_54874.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2525106
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-81092
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-81092
  • article
    https://github.com/mark3labs/mcp-go
  • article
    https://github.com/mark3labs/mcp-go/pull/921
  • article
    https://github.com/mark3labs/mcp-go/releases/tag/v0.56.0
  • article
    https://www.vulncheck.com/advisories/mcp-go-before-0.56.0-missing-host-header-validation-enables-dns-rebinding