{"id":"CVE-2026-77362","aliases":["EUVD-2026-98689","GHSA-43r2-c7g8-prc8"],"status":"published","title":"obsidian-tc bridge tools expose data outside the read ACL","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.002,"percentile":0.09847,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200","CWE-863"],"published":"2026-10-13T14:00:11Z","modified":"2026-10-28T02:30:24Z","fixes":[{"ecosystem":"npm","package":"obsidian-tc","fixed_in":["1.3.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"obsidian-tc","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1"}]}]},{"source":"osv","ecosystem":"npm","package":"obsidian-tc","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.3.1"}]}]}],"products":[{"vendor":"the-40-thieves","product":"obsidian-tc"}],"references":[{"url":"https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-43r2-c7g8-prc8","tags":["x_refsource_CONFIRM","advisory","web"]},{"url":"https://github.com/The-40-Thieves/obsidian-tc/pull/75","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/The-40-Thieves/obsidian-tc/commit/5ab2109274acf0070601fa71a62b14ddc9652309","tags":["x_refsource_MISC","fix","web"]},{"url":"https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1","tags":["x_refsource_MISC","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77362","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-43r2-c7g8-prc8"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77362.json","tags":["advisory"]},{"url":"https://github.com/The-40-Thieves/obsidian-tc","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-77362","title":"obsidian-tc bridge tools expose data outside the read ACL","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.","status":"published","published":"2026-10-13T14:00:11.565Z","modified":"2026-10-13T14:50:19.283Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T14:20:16.072351Z"}],"euvd":[{"id":"EUVD-2026-98689","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.","status":"published","published":"2026-10-13T14:00:11Z","modified":"2026-10-13T14:50:19Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T17:27:20.397021Z"}],"ghsa":[{"id":"GHSA-43r2-c7g8-prc8","title":"obsidian-tc Bridge tools leak denied-note data via unfiltered sibling fields","description":"### Impact\nBridge tool results filtered only the `items` array against the read ACL and passed sibling fields through unfiltered: `tasks_filter` emitted `groups` whose counts reflected denied notes, `makemd_query` returned `...result` siblings, and `list_templates` enumerated Templater template paths and parsed user-function bodies with no read-whitelist gate. A caller could infer or read data from notes outside its read ACL.\n\n### Patches\nFixed in **1.3.1**. Upgrade to `\u003e= 1.3.1`. All path-attributable fields are now scrubbed or fail-closed, and `list_templates` is gated on the read whitelist.\n\n### Workarounds\nDisable the affected bridge tools (`tasks_filter`, `makemd_query`, `list_templates`) via tool visibility.","status":"published","published":"2026-10-23T18:28:14Z","modified":"2026-10-23T18:28:14Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T14:41:35.723785Z"}],"nvd":[{"id":"CVE-2026-77362","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.","status":"published","published":"2026-10-13T14:17:42.49Z","modified":"2026-10-16T16:00:33.533Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T14:12:57.132005Z"}],"osv":[{"id":"CVE-2026-77362","title":"obsidian-tc bridge tools expose data outside the read ACL","description":"obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, bridge tools do not consistently apply the read access-control list (ACL) to every returned field. The tasks_filter tool exposes group counts derived from denied notes, makemd_query passes unfiltered sibling result fields through, and list_templates exposes template paths and parsed user-function bodies without a read-whitelist check. An authenticated caller can consequently infer or read data from notes outside the caller's read ACL. Version 1.3.1 fixes the vulnerability by filtering path-attributable fields and applying the read whitelist to list_templates.","status":"published","published":"2026-10-13T14:00:11.565Z","modified":"2026-10-28T02:30:24.805716748Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T15:45:17.102988Z"},{"id":"GHSA-43r2-c7g8-prc8","title":"obsidian-tc Bridge tools leak denied-note data via unfiltered sibling fields","description":"### Impact\nBridge tool results filtered only the `items` array against the read ACL and passed sibling fields through unfiltered: `tasks_filter` emitted `groups` whose counts reflected denied notes, `makemd_query` returned `...result` siblings, and `list_templates` enumerated Templater template paths and parsed user-function bodies with no read-whitelist gate. A caller could infer or read data from notes outside its read ACL.\n\n### Patches\nFixed in **1.3.1**. Upgrade to `\u003e= 1.3.1`. All path-attributable fields are now scrubbed or fail-closed, and `list_templates` is gated on the read whitelist.\n\n### Workarounds\nDisable the affected bridge tools (`tasks_filter`, `makemd_query`, `list_templates`) via tool visibility.","status":"published","published":"2026-10-23T18:28:14Z","modified":"2026-10-23T18:45:08.57649855Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-863"],"updated_at":"2026-11-02T15:46:36.434231Z"}]}}