Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| gnuwget | wget | ≤ 1.25.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | wget | No fix yet | — |
| Debian 13 | wget | No fix yet | — |
| Debian 12 | wget | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | wget | 1.25.0-2ubuntu4.2 | USN-8543-1 |
| Ubuntu 25.10 | wget | No fix yet | — |
| Ubuntu 24.04 LTS | wget | 1.21.4-1ubuntu4.3 | USN-8543-1 |
| Ubuntu 22.04 LTS | wget | 1.21.2-2ubuntu1.3 | USN-8543-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | wget | 1.20.3-1ubuntu2.1+esm2 | USN-8543-1 |
| Ubuntu Pro 18.04 LTS | wget | 1.19.4-1ubuntu2.2+esm3 | USN-8543-1 |
| Ubuntu Pro 16.04 LTS | wget | 1.17.1-1ubuntu1.5+esm3 | USN-8543-1 |
| Ubuntu Pro 14.04 LTS | wget | 1.15-1ubuntu1.14.04.5+esm2 | USN-8543-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | wget | 1.19.5-16.el8_10 | RHSA-2026:62144 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | wget | 1.19.5-16.el8_10 | ALSA-2026:62144 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | wget | 1.19.5-16.el8_10 | RLSA-2026:62144 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | wget | 1.24.5-150700.3.3.1 | SUSE-SU-2026:3337-1, SUSE-SU-2026:3148-1 |
| SLES 15 SP5 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
| SLES 15 SP4 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
Show 10 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | wget | 1.25.0-160000.3.1 | SUSE-SU-2026:23326-1 |
| SLES for SAP 15 SP5 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
| SLES for SAP 15 SP4 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
| SLES 16.0 | wget | 1.25.0-160000.3.1 | SUSE-SU-2026:23326-1 |
| SLE Micro 6.2 | wget | 1.25.0-160000.3.1 | SUSE-SU-2026:23297-1 |
| SLE Micro 6.1 | wget | 1.24.5-slfo.1.1_4.1 | SUSE-SU-2026:23163-1 |
| SLE Micro 6.0 | wget | 1.24.5-3.1 | SUSE-SU-2026:23053-1 |
| SLE Micro 5.5 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
| SLE HPC 15 SP5 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
| SLE HPC 15 SP4 | wget | 1.20.3-150000.3.34.1 | SUSE-SU-2026:3206-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | wget | 1.25.0-3.1 | openSUSE-SU-2026:11252-1 |
| openSUSE Leap 16.0 | wget | 1.25.0-160000.3.1 | openSUSE-SU-2026:21665-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | wget | 1.21.3-1.amzn2023.0.5 | ALAS2023-2026-2047 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | wget | 1.25.0-r15 | — |
| Wolfi rolling | wget-doc | No fix yet | — |
Advisories 17
- WID-SEC-2026-3595 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 2, 2026
- ALSA-2026:62144 Moderate: wget security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2236 wget: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Oct 4, 2026
- SUSE-SU-2026:23326-1 Security update for wget SUSE / openSUSE Security Updates · Sep 10, 2026
- VDE-2026-088 METTLER TOLEDO: LabX Standard and Enterprise Report on External Component Analysis - v21.4 CERT@VDE · Sep 10, 2026
- SUSE-SU-2026:23297-1 Security update for wget SUSE / openSUSE Security Updates · Sep 4, 2026
- RHSA-2026:62144 Red Hat Security Advisory: wget security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 2, 2026
- RLSA-2026:62144 Moderate: wget security, bug fix, and enhancement update Rocky Linux Security Advisories · Sep 2, 2026
- openSUSE-SU-2026:21665-1 Security update for wget SUSE / openSUSE Security Updates · Aug 28, 2026
- SUSE-SU-2026:23163-1 Security update for wget SUSE / openSUSE Security Updates · Aug 22, 2026
- ALAS2023-2026-2047 Important: wget security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 17, 2026
- SUSE-SU-2026:23053-1 Security update for wget SUSE / openSUSE Security Updates · Aug 12, 2026
- SUSE-SU-2026:3337-1 Security update for wget SUSE / openSUSE Security Updates · Jul 29, 2026
- SUSE-SU-2026:3206-1 Security update for wget SUSE / openSUSE Security Updates · Jul 24, 2026
- SUSE-SU-2026:3148-1 Security update for wget SUSE / openSUSE Security Updates · Jul 22, 2026
- USN-8543-1 wget vulnerabilities Ubuntu Security Notices (USN) · Jul 15, 2026
- openSUSE-SU-2026:11252-1 wget-1.25.0-3.1 on GA media SUSE / openSUSE Security Updates · Jul 11, 2026
References
- Fix Commit patch
- https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-underread-via-metalink-url-parsing third-party-advisory