Vulnerability · Published Feb 26, 2026 · Assigned by GitHub_M

CVE-2026-28208Junrar has arbitrary file write due to backslash path traversal bypass in LocalFolderExtractor on Linux/Unix

Medium 5.9

In plain English

A medium-severity path traversal in junrar from junrar. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 14.7% (higher than 97% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.9Medium

Exploit odds (30 days)14.7%top 3.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	com.github.junrar:junrar	7.5.8	GHSA-j273-m5qq-6825

Affected products (as reported)

Vendor	Product	Versions
junrar	junrar	< 7.5.8

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/junrar/junrar/security/advisories/GHSA-j273-m5qq-6825 x_refsource_CONFIRM
https://github.com/junrar/junrar/commit/947ff1d33f00f940aa68ae2593500291d799d954 x_refsource_MISC
https://github.com/junrar/junrar/releases/tag/v7.5.8 x_refsource_MISC