Vulnerability · Published Jul 7, 2026 · Assigned by VulnCheck
CVE-2026-58470GNU Wget 1.25.0 Integer Overflow via Content-Range Header Parsing
Medium 5.3
In plain English
A medium-severity integer overflow in wget from gnuwget. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attackers can supply malicious Content-Range header values to trigger undefined behavior and download desynchronization in the affected client.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | wget | no fix listed | DEBIAN-CVE-2026-58470 |
| Debian:13 | wget | no fix listed | DEBIAN-CVE-2026-58470 |
| Debian:14 | wget | no fix listed | DEBIAN-CVE-2026-58470 |
| Ubuntu:22.04:LTS | wget | 1.21.2-2ubuntu1.3 | UBUNTU-CVE-2026-58470 |
| Ubuntu:22.04:LTS | wget | 1.21.2-2ubuntu1.3 | USN-8543-1 |
| Ubuntu:24.04:LTS | wget | 1.21.4-1ubuntu4.3 | USN-8543-1 |
| Ubuntu:24.04:LTS | wget | 1.21.4-1ubuntu4.3 | UBUNTU-CVE-2026-58470 |
| Ubuntu:25.10 | wget | no fix listed | UBUNTU-CVE-2026-58470 |
| Ubuntu:26.04:LTS | wget | 1.25.0-2ubuntu4.2 | USN-8543-1 |
| Ubuntu:26.04:LTS | wget | 1.25.0-2ubuntu4.2 | UBUNTU-CVE-2026-58470 |
Affected products (as reported)
Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- Fix Commit patch
- https://www.vulncheck.com/advisories/gnu-wget-integer-overflow-via-content-range-header-parsing third-party-advisory