{"id":"GHSA-pqh8-4pj7-32xx","summary":"obsidian-tc HTTP transport lacks Origin/DNS-rebinding protection, enabling drive-by vault access on loopback","details":"### Impact\nThe Streamable HTTP transport was constructed without `enableDnsRebindingProtection`/`allowedHosts`/`allowedOrigins` and performed no `Origin`-header validation. With the documented `auth.mode: \"none\"` loopback default, a **drive-by web page could `POST http://127.0.0.1/mcp`** and receive caller `http-local` with scopes `[\"*\"]` — full vault read/write — via DNS rebinding / a forged Origin.\n\n### Patches\nFixed in **1.3.1**. Upgrade to `\u003e= 1.3.1`. The transport now enables DNS-rebinding protection and allowed hosts/origins and returns HTTP 403 on an invalid Origin (per MCP 2025-11-25).\n\n### Workarounds\nDo not expose the HTTP transport with `auth.mode: \"none\"`; require JWT auth, or bind to a non-loopback interface behind a proxy that validates `Origin`.","aliases":["CVE-2026-77363"],"modified":"2026-10-23T18:45:08.577279509Z","published":"2026-10-23T18:29:02Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2026-10-23T18:29:02Z","nvd_published_at":"2026-10-12T18:17:23Z","cwe_ids":["CWE-1385","CWE-346"],"severity":"CRITICAL"},"references":[{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-pqh8-4pj7-32xx"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/pull/74"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/commit/6428bfe6fdfd43aa7b4b369be3aecd6a268fb928"},{"type":"PACKAGE","url":"https://github.com/The-40-Thieves/obsidian-tc"},{"type":"WEB","url":"https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/cve-2026-77363"}],"affected":[{"package":{"name":"obsidian-tc","ecosystem":"npm","purl":"pkg:npm/obsidian-tc"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-pqh8-4pj7-32xx/GHSA-pqh8-4pj7-32xx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"}]}