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[USN-8443-1] web.py vulnerability

Posted on 17 June 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8443-1
June 17, 2026

webpy vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

web.py could be made to alter or expose database information over the
network.

Software Description:
- webpy: web framework for Python

Details:

It was discovered that web.py incorrectly handled sequence names in
PostgreSQL insert queries. An attacker could possibly use this issue
to perform SQL injection attacks, resulting in the alteration or exposure
of database information.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
python3-webpy 1:0.62-4ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 22.04 LTS
python3-webpy 1:0.61-1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 20.04 LTS
python3-webpy 1:0.40-2ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 18.04 LTS
python-webpy 1:0.38+20170615-1ubuntu0.1~esm1
Available with Ubuntu Pro
python3-webpy 1:0.38+20170615-1ubuntu0.1~esm1
Available with Ubuntu Pro

Ubuntu 16.04 LTS
python-webpy 1:0.37+20120626-1ubuntu0.1~esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8443-1
CVE-2025-3818

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