Path Traversal Vulnerability in Linux Mint Xreader EPUB File Handler
CVE-2026-104982

5.3MEDIUM

Key Information:

Vendor

Linux Mint

Status
Xreader
Vendor
CVE Published:
3 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-104982?

A vulnerability exists in Linux Mint's Xreader in versions up to 4.6.5, affecting the EPUB File Handler component. The flaw allows for path traversal through the 'setup_document_content_list' and 'g_strdup_printf' functions located in 'backend/epub/epub-document.c'. This could be exploited remotely, posing a risk to users if not addressed. The issue has been acknowledged, and it is recommended to upgrade to version 4.6.6, where the vulnerability is patched. Notably, support for EPUB has been removed from Xreader and reimplemented in the new Xepub component.

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-2026-104982 - Proof of Concept

References

https://vuldb.com/vuln/413198
vdb-entrytechnical-description
https://vuldb.com/vuln/413198/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-104982
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
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
.