CVE-2026-77364 (GCVE-0-2026-77364)

Vulnerability from cvelistv5 – Published: 2026-10-12 17:52 – Updated: 2026-10-12 17:52
VLAI
Title
obsidian-tc fail-open default ACL exposes Obsidian control-directory secrets
Summary
obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, undefined readPaths and writePaths settings allow all paths, strictReadDefault does not protect direct requests, and the .obsidian, .git, and .trash control directories are excluded only during enumeration. An authenticated caller can directly read sensitive files such as .obsidian/plugins/*/data.json, potentially exposing plugin API keys, Obsidian Sync passwords, and other in-vault data. Version 1.3.1 fixes the vulnerability by denying the control directories by default and enforcing strictReadDefault on direct request paths.
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-276 - Incorrect Default Permissions
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7566 records in the last 180 days details
Impacted products
Vendor Product Version CPE status
The-40-Thieves obsidian-tc Affected: < 1.3.1
guessed Create a notification for this product.
Show details on NVD website

{
  "containers": {
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          "product": "obsidian-tc",
          "vendor": "The-40-Thieves",
          "versions": [
            {
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              "version": "\u003c 1.3.1"
            }
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        }
      ],
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          "value": "obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, undefined readPaths and writePaths settings allow all paths, strictReadDefault does not protect direct requests, and the .obsidian, .git, and .trash control directories are excluded only during enumeration. An authenticated caller can directly read sensitive files such as .obsidian/plugins/*/data.json, potentially exposing plugin API keys, Obsidian Sync passwords, and other in-vault data. Version 1.3.1 fixes the vulnerability by denying the control directories by default and enforcing strictReadDefault on direct request paths."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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        {
          "descriptions": [
            {
              "cweId": "CWE-276",
              "description": "CWE-276: Incorrect Default Permissions",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T17:52:51.653Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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          "name": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-cvp8-vvgf-69q4",
          "tags": [
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          "url": "https://github.com/The-40-Thieves/obsidian-tc/security/advisories/GHSA-cvp8-vvgf-69q4"
        },
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          "name": "https://github.com/The-40-Thieves/obsidian-tc/pull/73",
          "tags": [
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          "url": "https://github.com/The-40-Thieves/obsidian-tc/pull/73"
        },
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        {
          "name": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/The-40-Thieves/obsidian-tc/releases/tag/v1.3.1"
        }
      ],
      "source": {
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        "discovery": "UNKNOWN"
      },
      "title": "obsidian-tc fail-open default ACL exposes Obsidian control-directory secrets"
    }
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  "cveMetadata": {
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    "datePublished": "2026-10-12T17:52:51.653Z",
    "dateReserved": "2026-08-20T19:28:35.245Z",
    "dateUpdated": "2026-10-12T17:52:51.653Z",
    "state": "PUBLISHED"
  },
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    "nvd": {
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                "vendor": "The-40-Thieves",
                "versions": [
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                    "version": "\u003c 1.3.1"
                  }
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            "value": "obsidian-tc is a governed, agent-ready Model Context Protocol server for Obsidian vaults. Prior to 1.3.1, undefined readPaths and writePaths settings allow all paths, strictReadDefault does not protect direct requests, and the .obsidian, .git, and .trash control directories are excluded only during enumeration. An authenticated caller can directly read sensitive files such as .obsidian/plugins/*/data.json, potentially exposing plugin API keys, Obsidian Sync passwords, and other in-vault data. Version 1.3.1 fixes the vulnerability by denying the control directories by default and enforcing strictReadDefault on direct request paths."
          }
        ],
        "id": "CVE-2026-77364",
        "lastModified": "2026-10-12T18:17:23.677",
        "metrics": {
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            {
              "cvssData": {
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          }
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        "vulnStatus": "Received",
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                "value": "CWE-200"
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              }
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            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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