Linux Mint Xreader up to 4.6.9 PDF Attachment Saving shell/ev-window.c g_file_get_child attachment path traversal

Summaryinfo

A vulnerability has been found in Linux Mint Xreader up to 4.6.9 and classified as critical. The affected element is the function g_file_get_child of the file shell/ev-window.c of the component PDF Attachment Saving Handler. Performing a manipulation of the argument attachment results in path traversal. This vulnerability is cataloged as CVE-2026-104983. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. One of the project maintainers closed this issue as "completed", because "EPUB support was removed from Xreader and reimplemented in Xepub". Code analysis indicates that this might be a misunderstanding of the situation.

Detailsinfo

A vulnerability classified as critical has been found in Linux Mint Xreader up to 4.6.9. This affects the function g_file_get_child of the file shell/ev-window.c of the component PDF Attachment Saving Handler. The manipulation of the argument attachment with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, integrity, and availability.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-104983. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The exploit is shared for download at gist.github.com. It is declared as proof-of-concept. One of the project maintainers closed this issue as "completed", because "EPUB support was removed from Xreader and reimplemented in Xepub". Code analysis indicates that this might be a misunderstanding of the situation.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Linux Mint

Name

• Xreader

Version

• 4.6.0
• 4.6.1
• 4.6.2
• 4.6.3
• 4.6.4
• 4.6.5
• 4.6.6
• 4.6.7
• 4.6.8
• 4.6.9

License

• open-source

CPE 2.3info

• 🔒
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CPE 2.2info

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Submitinfo

Accepted

• Submit #964349: Linux Mint Xreader 4.6.3 Path traversal (by rodtvs)

Be aware that VulDB is the high quality source for vulnerability data.

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