GNU Wget through 1.25.0, fixed in commit 37a40fc, contains a heap buffer underread vulnerability in the clean_metalink_string() function within src/metalink.c that allows a malicious server to trigger memory corruption by serving a Metalink document containing a whitespace-only URL. Attackers can cause the function to decrement a pointer past the start of the buffer when processing an all-whitespace Metalink URL, potentially leading to abnormal program behavior.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade wget | Oct 11, 2026 | Sep 1, 2026 |
| Amazon_linux_2023 | — | Upgrade wget-debugsourceUpgrade wgetUpgrade wget-debuginfo | Aug 18, 2026 | Jul 7, 2026 |
| Redhat_linux | — | Upgrade wget-debuginfoUpgrade wget-debugsourceUpgrade wget | Jul 22, 2026 | Jul 7, 2026 |
| Rocky_linux | — | Upgrade wget-debuginfoUpgrade wget-debugsourceUpgrade wget | Sep 3, 2026 | Sep 2, 2026 |
| Ubuntu | — | Upgrade wget (Ubuntu Pro)Upgrade wget | Jul 15, 2026 | Jul 14, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Oct 16, 2026 | Jul 7, 2026 |
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