{"id":"CVE-2026-58471","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-58471","summary":"GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c","details":"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.","published":"2026-07-07T19:47:47.662Z","modified":"2026-09-10T18:26:47.807453883Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58471.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58471"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/gnu-wget-heap-buffer-overflow-via-convert-fname-in-url-c"},{"type":"FIX","url":"https://gitlab.com/gnuwget/wget/-/commit/c2640fe5171c59f87c58dc9fcb195b2d18b010ee"},{"type":"PACKAGE","url":"https://gitlab.com/gnuwget/wget"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T18:26:47.807453883Z"}}