Path Traversal Vulnerability in Linux Mint Xreader PDF Handler
CVE-2026-104983

5.3MEDIUM

Key Information:

Vendor

Linux Mint

Status
Xreader
Vendor
CVE Published:
3 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-104983?

A path traversal vulnerability exists in the PDF Attachment Saving Handler of Linux Mint's Xreader up to version 4.6.9. This issue arises from improper handling of file paths in the g_file_get_child function, allowing malicious actors to manipulate attachment arguments and access unintended files on the server. This exploitation can occur remotely, posing serious risks to affected systems. While the maintainers have indicated the issue is resolved through the removal of EPUB support from Xreader, the potential for exploitation suggests that users should remain vigilant and ensure they are using the most updated version of the software.

Affected Version(s)

Xreader 4.6.0

Xreader 4.6.1

Xreader 4.6.2

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-104983 - Proof of Concept

References

https://vuldb.com/vuln/413199
vdb-entrytechnical-description
https://vuldb.com/vuln/413199/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-104983
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

rodtvs (VulDB User)
VulDB CNA Team
.