# CVE-2026-90631: Apache OpenOffice external link loading without authorization

Source: https://junglewise.ai/threats/cve-2026-90631-apache-openoffice-documents-can-contain-links-a-missing  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-04. Updated: 2026-11-04  
License: CC BY 4.0 with a link back

CVE-2026-90631 · Severity: info · Published 2026-11-04

Apache OpenOffice is an open-source office productivity suite used for creating and editing documents. The vulnerability allows an attacker to craft a malicious document that automatically loads external links without user permission, potentially exposing sensitive environment variables stored on the user's computer. An employee opening a compromised document could unknowingly leak confidential system information.

Technologies: [Apache OpenOffice](https://junglewise.ai/threats/technologies/openoffice). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-90631 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-90631 being exploited in the wild.

**How severe is CVE-2026-90631?** Informational severity, published 4 November 2026.

**Which products and versions are affected?** Apache OpenOffice through 4.1.16.

**Is there a fix for CVE-2026-90631?** Yes: fixed in 4.1.17. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-90631 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-90631?** Check whether you run Apache OpenOffice 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 4.1.17

## Technical details

A missing authorization check in Apache OpenOffice permits external links in documents to be loaded without prompting the user, enabling an attacker to exfiltrate environment variables during document processing. The vulnerability requires only that a user open a crafted document, with no additional interaction required. This is addressed by updating to version 4.1.17 or later.

## Affected products

- Apache OpenOffice through 4.1.16

## Timeline

- 2026-11-04: disclosed

## References

- [https://lists.apache.org/thread.html/j19rrk8jwrlg41tj6rfdcccj8cyyxhz9](https://lists.apache.org/thread.html/j19rrk8jwrlg41tj6rfdcccj8cyyxhz9)

## Related threats

- [Apache OpenOffice heap buffer overflow in DXF parsing](https://junglewise.ai/threats/cve-2026-59267-a-crafted-dxf-document-causes-a-heap-buffer-overflow-in-draw-in)
- [Apache OpenOffice out-of-bounds memory write in PDF import](https://junglewise.ai/threats/cve-2026-90634-an-uncontrolled-memory-access-in-the-pdf-import-code-of-apache)
- [Apache OpenOffice file disclosure via GStreamer multimedia handling](https://junglewise.ai/threats/cve-2026-90632-apache-openoffice-documents-can-include-multimedia-content-audio)
- [Apache OpenOffice memory access violation in WMF import](https://junglewise.ai/threats/cve-2026-90629-an-uncontrolled-memory-access-in-the-wmf-import-code-of-apache)
- [Apache OpenOffice stack overflow in PDF export CFF font parsing](https://junglewise.ai/threats/cve-2026-90628-an-uncontrolled-memory-access-in-the-pdf-export-code-of-apache)