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QSN-8543-2: Wget regression
August 20, 2026
Summary
USN-8543-1 introduced a regression in Wget.
Details
USN-8543-1 fixed vulnerabilities in Wget. The update for CVE-2026-58472 was incomplete and could introduce a regression. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Wget mishandled semicolons in the userinfo subcomponent of a URL. A remote attacker could possibly use this issue to trick a user into connecting to a different host than intended. This issue only affected Ubuntu 14.04 LTS. (CVE-2024-38428)
It was discovered that Wget incorrectly handled Metalink documents containing a whitespace-only URL. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-58469)
It was discovered that Wget incorrectly handled Content-Range header values, leading to an integer overflow. A remote attacker could possibly use this issue to cause download desynchronization. (CVE-2026-58470)
It was discovered that Wget incorrectly handled character set conversion of server-supplied filenames. A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS. (CVE-2026-58471)
It was discovered that Wget incorrectly handled HTML attributes requiring entity encoding. A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code. (CVE-2026-58472)
Affected QuantaStor releases
| Release | Platform | Package | Exposure | Shipped version | Fixed version | Status |
|---|---|---|---|---|---|---|
| 6.9.1.001 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.9.0.464 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.6.015 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.5.018 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.4.038 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.3.018 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.2.002 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.1.007 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
| 6.8.0.205 | Ubuntu 22.04 LTS | wget | Internally-facing | 1.21.2-2ubuntu1.1 | 1.21.2-2ubuntu1.5 | Fixed by QuantaStor security update |
Internally-facing: only accessible when logged into the QuantaStor console/ssh as the qadmin administrative sudo user; generally lower priority. Externally-facing: part of a service the storage platform presents on the network (or the kernel), so potentially reachable over the network.
References
https://ubuntu.com/security/notices/USN-8543-2
https://bugs.launchpad.net/ubuntu/+source/wget/+bug/2163754
Update
Fixes marked Fixed by QuantaStor security update are applied by upgrading QuantaStor with security patches included (Upgrade Manager). Fixed package versions:
| Platform | Package | Version |
|---|---|---|
| bionic | wget | 1.19.4-1ubuntu2.2+esm5 |
| Ubuntu 20.04 LTS | wget | 1.20.3-1ubuntu2.1+esm4 |
| Ubuntu 22.04 LTS | wget | 1.21.2-2ubuntu1.5 |
| Ubuntu 24.04 LTS | wget | 1.21.4-1ubuntu4.5 |
| resolute | wget | 1.25.0-2ubuntu4.4 |
| trusty | wget | 1.15-1ubuntu1.14.04.5+esm4 |
| xenial | wget | 1.17.1-1ubuntu1.5+esm5 |