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Ubuntu Flask Important Info Exposure CVE-2026-27205 USN-8104

Ubuntu Flask Important Info Exposure CVE-2026-27205 USN-8104

Linuxsecurity •LinuxSecurity Advisories • March 18, 2026

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Flask could be made to expose sensitive information over the network. Software Description: - flask: Micro web framework based on Werkzeug and Jinja2 Details: Shourya Jaiswal discovered that Flask did not correctly mark certain web responses as user-specific. A remote attacker could possibly use this issue to obtain sensitive information.

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Flask could be made to expose sensitive information over the network. Software Description: - flask: Micro web framework based on Werkzeug and Jinja2 Details: Shourya Jaiswal discovered that Flask did not correctly mark certain web responses as user-specific. A remote attacker could possibly use this issue to obtain sensitive information.

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS python3-flask 3.0.2-1ubuntu1.1 Ubuntu 22.04 LTS python3-flask 2.0.1-2ubuntu1.2 Ubuntu 20.04 LTS python3-flask 1.1.1-2ubuntu0.1+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS python3-flask 3.0.2-1ubuntu1.1 Ubuntu 22.04 LTS python3-flask 2.0.1-2ubuntu1.2 Ubuntu 20.04 LTS python3-flask 1.1.1-2ubuntu0.1+esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

CVE-2026-27205

Extracted Entities

Attack Types (1)

Companies (1)