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{"bugzilla": {"description": "wget: GNU Wget: Memory corruption via crafted Metalink URL", "id": "2497838", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497838"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["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.", "A flaw was found in GNU Wget. A malicious server could exploit a heap buffer underread vulnerability by providing a specially crafted Metalink document containing a URL with only whitespace characters. This could lead to memory corruption and abnormal program behavior, potentially causing a denial of service."], "mitigation": {"lang": "en:us", "value": "Avoid using Wget's Metalink options (--input-metalink and --metalink-over-http) when downloading from untrusted or unverified servers. Since Metalink processing must be explicitly requested, omitting these options avoids the vulnerable code path entirely."}, "name": "CVE-2026-58469", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "wget", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "wget", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "wget", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "impact": "moderate", "package_name": "wget", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "wget", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-07-07T19:43:34Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-58469\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-58469\nhttps://gitlab.com/gnuwget/wget/-/commit/37a40fcb450153f69537c7cbc2a7a4fb0b6f7826\nhttps://www.vulncheck.com/advisories/gnu-wget-heap-buffer-underread-via-metalink-url-parsing"], "statement": "Moderate: A heap-buffer-underread in GNU Wget's clean_metalink_string() function, affecting Red Hat Enterprise Linux 8, can be triggered when wget processes a specially crafted Metalink document containing a resource URL consisting only of whitespace characters. This code path is only reachable when Wget's Metalink support is explicitly requested via --input-metalink or --metalink-over-http; it is not exercised during ordinary downloads. Successful exploitation requires a user to invoke Wget's Metalink handling against an attacker-controlled or compromised server. The out-of-bounds byte is read only to decide whether to continue a trim loop and is never returned, logged, or written -- the practical impact is limited to a crash of the wget process (denial of service), not memory corruption or code execution.", "threat_severity": "Moderate"}

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