# CVE-2026-104064: Scribus integer overflow in TIFF loader

Source: https://junglewise.ai/threats/cve-2026-104064-scribus-before-1-6-7-contains-an-integer-overflow-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-30. Updated: 2026-10-30  
License: CC BY 4.0 with a link back

CVE-2026-104064 · Severity: high · CVSS 7.8 · Published 2026-10-30

Scribus is a desktop publishing application used to create and edit documents. An integer overflow vulnerability in its TIFF image loader allows attackers to crash the application or execute code by providing a specially crafted TIFF file with large tile dimensions, corrupting memory when the file is imported.

Technologies: [Scribus Project Scribus](https://junglewise.ai/threats/technologies/scribus). Vendors: [Scribus Project](https://junglewise.ai/threats/vendors/scribus-project).

## Quick answers

**Is CVE-2026-104064 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-104064 being exploited in the wild.

**How severe is CVE-2026-104064?** High severity, with a CVSS score of 7.8, published 30 October 2026.

**Which products and versions are affected?** Scribus Project Scribus before 1.6.7.

**Is there a fix for CVE-2026-104064?** Yes: fixed in 1.6.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-104064 attacked?** It is attacked with local access, in a web application.

**Am I affected by CVE-2026-104064?** Check whether you run Scribus Project Scribus at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in 1.6.7

## Technical details

An integer overflow in the scimgdataloader_tiff component fails to validate tile dimensions before calculating buffer sizes, leading to a heap overflow. The vulnerability is triggered when processing tiled TIFF files with large width, height, and sample values; no user interaction beyond opening a malicious file is required, and the fix validates tile dimensions and uses safe size functions.

## Affected products

- Scribus Project Scribus before 1.6.7

## Timeline

- 2026-10-30: disclosed

## References

- [https://github.com/scribusproject/scribus](https://github.com/scribusproject/scribus)
- [https://github.com/scribusproject/scribus/commit/b3e2be4e0f4063991c0b3af1c1447218ed33f0cc](https://github.com/scribusproject/scribus/commit/b3e2be4e0f4063991c0b3af1c1447218ed33f0cc)

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