GHSA-JGMR-X24H-Q8JJ高危未审查

无摘要

OSV 1.4.0 · unreviewed · 修改于 2026-08-29 23:30

发布时间

2026-08-29 23:30

GitHub 审查时间

—

NVD 发布时间

2026-08-29 22:16

源文件

advisories/unreviewed/2026/08/GHSA-jgmr-x24h-q8jj/GHSA-jgmr-x24h-q8jj.json

公告说明

BookStack before 26.05.4 contains a remote code execution vulnerability in the portable ZIP import functionality that allows users with Import Content and Create Books permissions to upload a PHP polyglot file as a book cover. Attackers can bypass image extension validation by embedding a PHP file with a .php filename in the ZIP archive, which is stored in the public web root and executed by unauthenticated requests.

受影响的软件包

该公告没有提供结构化的受影响软件包信息。

参考链接

ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2026-82450

标识信息

别名 / CVE

CVE-2026-82450

CWE

CWE-434

软件生态

无

扩展资料

暂无扩展资料。

CVSS 评分

CVSS_V3

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

CVSS_V4

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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

原始 OSV JSON

{
  "id": "GHSA-jgmr-x24h-q8jj",
  "aliases": [
    "CVE-2026-82450"
  ],
  "details": "BookStack before 26.05.4 contains a remote code execution vulnerability in the portable ZIP import functionality that allows users with Import Content and Create Books permissions to upload a PHP polyglot file as a book cover. Attackers can bypass image extension validation by embedding a PHP file with a .php filename in the ZIP archive, which is stored in the public web root and executed by unauthenticated requests.",
  "affected": [],
  "modified": "2026-08-29T15:30:19Z",
  "severity": [
    {
      "type": "CVSS_V3",
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
    },
    {
      "type": "CVSS_V4",
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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"
    }
  ],
  "published": "2026-08-29T15:30:19Z",
  "references": [
    {
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82450",
      "type": "ADVISORY"
    },
    {
      "url": "https://github.com/BookStackApp/BookStack/commit/e210cc32e4cbb1efeae5c5c9d0fef8e3c6a752e6",
      "type": "WEB"
    },
    {
      "url": "https://github.com/BookStackApp/BookStack",
      "type": "WEB"
    },
    {
      "url": "https://www.vulncheck.com/advisories/bookstack-before-26.05.4-remote-code-execution-via-book-cover",
      "type": "WEB"
    }
  ],
  "schema_version": "1.4.0",
  "database_specific": {
    "cwe_ids": [
      "CWE-434"
    ],
    "severity": "HIGH",
    "github_reviewed": false,
    "nvd_published_at": "2026-08-29T14:16:37Z",
    "github_reviewed_at": null
  }
}