GHSA-J8G6-HW52-MHG7

Vulnerability from github – Published: 2026-08-28 00:32 – Updated: 2026-08-28 00:32
VLAI
Details

A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended.

Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
2.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
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{
  "affected": [],
  "aliases": [
    "CVE-2026-81845"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T00:18:22Z",
    "severity": "LOW"
  },
  "details": "A vulnerability has been found in arben-adm mcp-sequential-thinking up to 0.5.0. Impacted is the function import_session/export_session of the file mcp_sequential_thinking/server.py of the component Import Session/Export Session. Such manipulation of the argument file_path leads to path traversal. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 0.6.0 is recommended to address this issue. The name of the patch is 2fad3ee8ab1d0868b6c1afb5895bc336a10e5267. Upgrading the affected component is recommended.",
  "id": "GHSA-j8g6-hw52-mhg7",
  "modified": "2026-08-28T00:32:05Z",
  "published": "2026-08-28T00:32:04Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81845"
    },
    {
      "type": "WEB",
      "url": "https://github.com/arben-adm/mcp-sequential-thinking/issues/17"
    },
    {
      "type": "WEB",
      "url": "https://github.com/arben-adm/mcp-sequential-thinking/pull/18"
    },
    {
      "type": "WEB",
      "url": "https://github.com/arben-adm/mcp-sequential-thinking/commit/2fad3ee8ab1d0868b6c1afb5895bc336a10e5267"
    },
    {
      "type": "WEB",
      "url": "https://github.com/arben-adm/mcp-sequential-thinking"
    },
    {
      "type": "WEB",
      "url": "https://github.com/arben-adm/mcp-sequential-thinking/releases/tag/v0.6.0"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/cve/CVE-2026-81845"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/887254"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/396171"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/396171/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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