RFC 9207

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14:20

2026-07-28

tigera.io

ai-infrastructure

MCP’s Auth Hardening: What the Six New OAuth SEPs Fix, and What They Still Don’t

The MCP 2026-07-28 release candidate includes six SEPs that harden the protocol's OAuth layer, addressing issuer validation, credential binding, and client type declaration to fix mix-up attacks preva…

04:25

2026-05-22

dev.to

cybersecurity

MCP SEP-2468: RFC 9207 Iss Parameter for OAuth Mix-Up Defense

MCP SEP-2468, merged into the Model Context Protocol specification on May 17, 2026, implements RFC 9207's `iss` parameter to defend against OAuth mix-up attacks. The change requires authorization serv…

// co-occurs with top 6 entities

MCP 2 SEP-2468 2 OAuth 2 Model Context Protocol 2 RFC 8707 1 SEP-2352 1

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cybersecurity 1 developer tools 1 open source 1 large language models 1 artificial intelligence 1 ai infrastructure 1