Out-of-bounds Read in GNU Wget
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- GNU Wget
- Gnuwget Wget — versions 0, 37a40fcb450153f69537c7cbc2a7a4fb0b6f7826
Weakness classification (CWE)
References
- gitlab.com/gnuwget/wget/-/commit/37a40fcb450153f69537c7cbc2a7a4fb0b6f7826 (Patch, patch)
- www.vulncheck.com/advisories/gnu-wget-heap-buffer-underread-via-metalink-url-pa… (Patch, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-58469?
- CVE-2026-58469 is a high-severity vulnerability in GNU Wget, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2026-07-07.
- How severe is CVE-2026-58469?
- High severity. CVSS v3 base score is 7.5 out of 10.