SB20260427120 - Path traversal in junrar

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Main Vulnerability Database SB20260427120

SB20260427120 - Path traversal in junrar

Published: April 27, 2026

Security Bulletin ID SB20260427120
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Path traversal (CVE-ID: CVE-2026-41245)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to write arbitrary files with attacker-controlled content into sibling directories.

The vulnerability exists due to path traversal in LocalFolderExtractor when extracting a crafted RAR archive. A remote attacker can supply a specially crafted archive entry path to write arbitrary files with attacker-controlled content into sibling directories.

The issue stems from createDirectory() and createFile() validating extraction paths using a string prefix.


Remediation

Install update from vendor's website.

References