Ubuntu USN · USN-8378-1

libwww-perl vulnerability

Published: Wed, 03 Jun 2026 13:33

CVE-2026-8368

Summary

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

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.

Recommended actions per Ubuntu release

StackPatch playbook auto-generated per release codename and per affected package.

Ubuntu jammy

libwww-perl→6.61-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.61-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libwww-perl→6.61-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.61-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu noble

libwww-perl→6.76-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.76-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libwww-perl→6.76-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.76-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu questing

libwww-perl→6.78-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.78-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libwww-perl→6.78-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.78-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Ubuntu resolute

libwww-perl→6.81-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.81-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.
libwww-perl→6.81-1ubuntu0.1apt_upgrade
Standard apt upgrade. Install 6.81-1ubuntu0.1 from the apt repo.
```
sudo apt-get update
sudo apt-get install --only-upgrade -y libwww-perl
```
Most apt upgrades restart their service automatically. needrestart lists anything else.

Are YOU affected by USN-8378-1?

5-second check on your actual server. Reads /etc/os-release, uname -r, and dpkg-query; matches against the live USN + Debian Security Tracker feeds; tells you whether USN-8378-1 (and any other live CVE) applies. Anonymous, no signup.

curl https://mindsparkstack.com/scan.sh | bash

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