CVE-2026-58469
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.
No public exploitation has been reported so far. A fixed version is available (see the table below).
Recommended action: Update to the fixed version listed for your distribution using the native package manager.
Severity metrics
CVSS 4.0 : 8.7 HIGH · CVSS 3.1 : 7.5 HIGH
Vector: AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
| Distribution | Package | Affected | Fixed version | Status |
|---|---|---|---|---|
| Debian:11 | wget | - | - | affected (no fix yet) |
| Debian:12 | wget | - | - | affected (no fix yet) |
| Debian:13 | wget | - | - | affected (no fix yet) |
| Debian:14 | wget | - | - | affected (no fix yet) |
| Ubuntu:Pro:18.04:LTS | wget | - | 1.19.4-1ubuntu2.2+esm3 | fixed |
| Ubuntu:Pro:20.04:LTS | wget | - | 1.20.3-1ubuntu2.1+esm2 | fixed |
| Ubuntu:22.04:LTS | wget | - | 1.21.2-2ubuntu1.3 | fixed |
| Ubuntu:24.04:LTS | wget | - | 1.21.4-1ubuntu4.3 | fixed |
| Ubuntu:25.10 | wget | - | - | affected (no fix yet) |
| Ubuntu:26.04:LTS | wget | - | 1.25.0-2ubuntu4.2 | fixed |
| Ubuntu:Pro:14.04:LTS | wget | - | 1.15-1ubuntu1.14.04.5+esm2 | fixed |
| Ubuntu:Pro:16.04:LTS | wget | - | 1.17.1-1ubuntu1.5+esm3 | fixed |
| SUSE:Linux Enterprise Module for Basesystem 15 SP7 | wget | - | 1.24.5-150700.3.3.1 | fixed |
| SUSE:Linux Enterprise Micro 5.5 | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP4-LTSS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise Server 15 SP5-LTSS | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP4 | wget | - | 1.20.3-150000.3.34.1 | fixed |
| SUSE:Linux Enterprise Server for SAP Applications 15 SP5 | wget | - | 1.20.3-150000.3.34.1 | fixed |
| openSUSE:Tumbleweed | wget | - | 1.25.0-3.1 | fixed |