CVE catalog
CVE-2026-58471
GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corrupti
- Severity
- Medium · CVSS 6
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.39% · Oct 25, 2026
GNU Wget through 1.25.0, fixed in commit c2640fe, contains a heap buffer overflow vulnerability in the convert_fname() function within src/url.c that allows remote attackers to trigger memory corruption through a server-supplied filename requiring character set conversion. When the output buffer is too small during iconv E2BIG reallocation, the reallocation logic miscalculates the remaining space, leading to a heap buffer overflow that can be exploited via a maliciously crafted server response.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | wget | sid | 1.25.0-3 | vulnerable |
| Debian | wget | forky | 1.25.0-3 | vulnerable |
| Debian | wget | trixie | 1.25.0-2 | vulnerable |
| Debian | wget | bookworm | 1.21.3-1+deb12u1 | vulnerable |
| Cpe | wget | Not reported | Not reported | vulnerable |
| Cpe | wget | Not reported | Not reported | unknown |
| Cpe | wget | Not reported | 1.21.4-1ubuntu4.3 | fixed |
| Ubuntu | wget | pro | 1.20.3-1ubuntu1 | vulnerable |
| Ubuntu | wget | pro | 1.20.3-1ubuntu2 | vulnerable |
| Ubuntu | wget | pro | 1.20.3-1ubuntu2.1 | vulnerable |
| Ubuntu | wget | pro | 1.20.3-1ubuntu2.1+esm2 | fixed |
| Ubuntu | wget | 22.04 | 1.21-1ubuntu3 | vulnerable |
| Ubuntu | wget | 22.04 | 1.21-1ubuntu4 | vulnerable |
| Ubuntu | wget | 22.04 | 1.21-1ubuntu5 | vulnerable |
| Ubuntu | wget | 22.04 | 1.21.2-2ubuntu1 | vulnerable |
| Ubuntu | wget | 22.04 | 1.21.2-2ubuntu1.1 | vulnerable |
| Ubuntu | wget | 22.04 | 1.21.2-2ubuntu1.3 | fixed |
| Ubuntu | wget | 24.04 | 1.21.3-1ubuntu1 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu1 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu2 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu3 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu4 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu4.1 | vulnerable |
| Ubuntu | wget | 24.04 | 1.21.4-1ubuntu4.3 | fixed |
| Ubuntu | wget | 25.10 | 1.24.5-2ubuntu1 | vulnerable |
| Ubuntu | wget | 25.10 | 1.25.0-2ubuntu1 | vulnerable |
| Ubuntu | wget | 25.10 | 1.25.0-2ubuntu2 | vulnerable |
| Ubuntu | wget | 25.10 | 1.25.0-2ubuntu3 | vulnerable |
| Ubuntu | wget | 26.04 | 1.25.0-2ubuntu3 | vulnerable |
| Ubuntu | wget | 26.04 | 1.25.0-2ubuntu4 | vulnerable |
| Ubuntu | wget | 26.04 | 1.25.0-2ubuntu4.2 | fixed |
| Cpe | wget | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | wget | source | sid | (unfixed) | not yet assigned | Not reported | [1141689] |
| Debian | wget | source | forky | (unfixed) | not yet assigned | Not reported | [1141689] |
| Debian | wget | source | trixie | (unfixed) | not yet assigned | Not reported | [1141689] |
| Debian | wget | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141689] |
| Cpe | wget | cpe | Not reported | 1.21.4-1ubuntu4.3 | Not reported | Not reported | Not reported |
| Ubuntu | wget | deb | pro | 1.20.3-1ubuntu2.1+esm2 | Not reported | UBUNTU-CVE-2026-58471 | Not reported |
| Ubuntu | wget | deb | 22.04 | 1.21.2-2ubuntu1.3 | Not reported | UBUNTU-CVE-2026-58471 | Not reported |
| Ubuntu | wget | deb | 24.04 | 1.21.4-1ubuntu4.3 | Not reported | UBUNTU-CVE-2026-58471 | Not reported |
| Ubuntu | wget | deb | 26.04 | 1.25.0-2ubuntu4.2 | Not reported | UBUNTU-CVE-2026-58471 | Not reported |
Notes
[trixie] wget: Minor issue [bookworm] wget: Minor issue
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [wget]Affected
Details (2)
1.21.3-1+deb12u1· amd64 · bookwormAffected
nvd · wget · debian · bookworm; nvd · wget · debian · 12
1.21.3-1+deb12u1· arm64 · bookwormAffected
nvd · wget · debian · bookworm; nvd · wget · debian · 12
[Debian 13 (Trixie)]
- [wget]Affected
Details (2)
1.25.0-2· amd64 · trixieAffected
nvd · wget · debian · 13
1.25.0-2· arm64 · trixieAffected
nvd · wget · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11252-1.json]
- [https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-58471]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-58471]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2026-58471]
- [https://security-tracker.debian.org/tracker/CVE-2026-58471]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-58471.json]
- [https://ubuntu.com/security/notices/USN-8543-1]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-2236.json]
- [https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX] · [Ubuntu Security Notices (USN)]