GHSA-W47Q-945M-Q9PC高危已审查

Document Merge Service vulnerable to RCE via SSTI (xlsx tempaltes)

OSV 1.4.0 · github-reviewed · 修改于 2026-08-20 03:17

发布时间

2026-08-20 03:17

GitHub 审查时间

2026-08-20 03:17

NVD 发布时间

—

源文件

advisories/github-reviewed/2026/08/GHSA-w47q-945m-q9pc/GHSA-w47q-945m-q9pc.json

公告说明

Impact

A remote code execution (RCE) via server-side template injection (SSTI) allows for user supplied code to be executed in the server's context where it is executed as the document-merge-server user with the UID 901 thus giving an attacker considerable control over the container. The vulnerability is limited to XLSX templates, were the xltpl library uses a npn-sandboxed Jinja environment for the processing of the template.

Patches

It has been patched in v9.1.0

Workarounds

Disable the upload/usage of XLSX templates.

References

Are there any links users can visit to find out more?

https://book.hacktricks.xyz/pentesting-web/ssti-server-side-template-injection/jinja2-ssti

受影响的软件包

PyPI

document-merge-service

标识信息

别名 / CVE

CVE-2026-53964

CWE

CWE-1336

软件生态

PyPI

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

原始 OSV JSON

{
  "id": "GHSA-w47q-945m-q9pc",
  "aliases": [
    "CVE-2026-53964"
  ],
  "details": "### Impact\nA remote code execution (RCE) via server-side template injection (SSTI) allows for user supplied code to be executed in the server's context where it is executed as the document-merge-server user with the UID 901 thus giving an attacker considerable control over the container. The vulnerability is limited to XLSX templates, were the `xltpl` library uses a npn-sandboxed Jinja environment  for the processing of the template. \n\n### Patches\nIt has been patched in [v9.1.0](https://github.com/adfinis/document-merge-service/releases/tag/v9.1.0)\n\n### Workarounds\nDisable the upload/usage of XLSX templates.\n\n### References\nAre there any links users can visit to find out more?\n\nhttps://book.hacktricks.xyz/pentesting-web/ssti-server-side-template-injection/jinja2-ssti",
  "summary": "Document Merge Service vulnerable to RCE via SSTI (xlsx tempaltes)",
  "affected": [
    {
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "9.1.0"
            }
          ]
        }
      ],
      "package": {
        "name": "document-merge-service",
        "ecosystem": "PyPI"
      }
    }
  ],
  "modified": "2026-08-19T19:17:19Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
    }
  ],
  "published": "2026-08-19T19:17:19Z",
  "references": [
    {
      "url": "https://github.com/adfinis/document-merge-service/security/advisories/GHSA-w47q-945m-q9pc",
      "type": "WEB"
    },
    {
      "url": "https://github.com/adfinis/document-merge-service",
      "type": "PACKAGE"
    },
    {
      "url": "https://github.com/adfinis/document-merge-service/releases/tag/v9.1.0",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-1336"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "nvd_published_at": null,
    "github_reviewed_at": "2026-08-19T19:17:19Z"
  }
}