CVE-2026-28208— Junrar has arbitrary file write due to backslash path traversal bypass in LocalFolderExtractor on Linux/Unix
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I. Basic Information for CVE-2026-28208
Vulnerability Information
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Vulnerability Title
Junrar has arbitrary file write due to backslash path traversal bypass in LocalFolderExtractor on Linux/Unix
Source: NVD (National Vulnerability Database)
Vulnerability Description
Junrar is an open source java RAR archive library. Prior to version 7.5.8, a backslash path traversal vulnerability in `LocalFolderExtractor` allows an attacker to write arbitrary files with attacker-controlled content anywhere on the filesystem when a crafted RAR archive is extracted on Linux/Unix. This can often lead to remote code execution (e.g., overwriting shell profiles, source code, cron jobs, etc). Version 7.5.8 has a fix for the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Junrar 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Junrar是一个普通 Java Unrar 库。用于读取和提取 .Rar 文件。 Junrar 7.5.8之前版本存在路径遍历漏洞，该漏洞源于LocalFolderExtractor中存在反斜杠路径遍历，可能导致任意文件写入和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-28208
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