USN-8378-1: libwww-perl vulnerability

Publication date

3 June 2026

Overview

libwww-perl could be made to expose sensitive information over the network.


Packages

  • libwww-perl - simple and consistent interface to the world-wide web

Details

It was discovered that libwww-perl incorrectly handled redirects. A remote
attacker could possibly use this issue to obtain sensitive information by
causing Authorization headers to be sent to a different host.

It was discovered that libwww-perl incorrectly handled redirects. A remote
attacker could possibly use this issue to obtain sensitive information by
causing Authorization headers to be sent to a different host.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
26.04 LTS resolute libwww-perl –  6.81-1ubuntu0.1
25.10 questing libwww-perl –  6.78-1ubuntu0.1
24.04 LTS noble libwww-perl –  6.76-1ubuntu0.1
22.04 LTS jammy libwww-perl –  6.61-1ubuntu0.1

Reduce your security exposure

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