CVE-2023-2255 Remote documents loaded without prompt via IFrame

What is CVE-2023-2255?

CVE-2023-2255 is a medium-severity vulnerability in Debian Debian Linux, published on 25 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Improper access control in editor components of The Document Foundation LibreOffice allowed an attacker to craft a document that would cause external links to be loaded without prompt. In the affected versions of LibreOffice documents that used "floating frames" linked to external files, would load the contents of those frames without prompting the user for permission to do so. This was inconsistent with the treatment of other linked content in LibreOffice. This issue affects: The Document Foundation LibreOffice 7.4 versions prior to 7.4.7; 7.5 versions prior to 7.5.3.

Weakness: CWE-264

Which versions are affected by CVE-2023-2255?

It affects 2 products.

Products include Debian Debian Linux, Libreoffice Libreoffice.

How do I fix CVE-2023-2255?

Upgrade to a fixed version.

Is CVE-2023-2255 being exploited?

There is no known exploitation of CVE-2023-2255 in the wild and no public exploit code.

Public exploit code: 3 proofs of concept on GitHub.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2023-2255, GHSA-6pmq-j4m3-q2r8, UBUNTU-CVE-2023-2255.