CVE-2026-28208

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

MEDIUM
5.9
CVSS Score
Published: February 26, 2026 at 10:20 PM UTC
Updated: June 17, 2026 at 10:28 AM UTC
2 products affected across 2 vendorsJunrarJunrar

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Severity
MEDIUM5.9
Exploit prediction
EPSS 15%
SSVC
PoC

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 7.5.8
Affected range stops below 7.5.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/junrar/junrar/security/advisories/GHSA-j273-m5qq-6825
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/junrar/junrar/releases/tag/v7.5.8

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.9MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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