# CVE-2026-104983: Linux Mint Xreader PDF Attachment Saving ev-window.c g_file_get_child path traversal

> Remote attackers can exploit a path traversal flaw in Xreader's PDF attachment saving to read or modify arbitrary files.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 3 Oct 2026
- **Updated:** 5 Oct 2026
- **Also known as:** GHSA-63c6-qprh-g95r, openSUSE-SU-2026:12077-1

## What is CVE-2026-104983?

CVE-2026-104983 is a medium-severity path traversal vulnerability in Linux Mint Xreader, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability has been found in Linux Mint Xreader up to 4.6.9. Impacted is the function g_file_get_child of the file shell/ev-window.c of the component PDF Attachment Saving Handler. Such manipulation of the argument attachment leads to path traversal. The attack may be performed from remote. The exploit has been disclosed to the public and may be used. 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.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2026-104983?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `xreader` | openSUSE:Tumbleweed | All versions | 4.6.9-2.1 |

## How do I fix CVE-2026-104983?

No fix published yet.

## Is CVE-2026-104983 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104983 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-104983 and fix it if it is affected.

What it is: CVE-2026-104983 is a medium-severity path traversal vulnerability in Linux Mint Xreader, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-104983 exists.

Affected product: Linux Mint Xreader. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-104983/ (Markdown: https://insights.sbomify.com/CVE-2026-104983/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-104983
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-104983
- OSV: https://osv.dev/vulnerability/CVE-2026-104983

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-104983/
Summaries are generated and may contain mistakes; the official description above is the record.