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CVE-2026-58471

MEDIUM
5.9
CVSS 3.1
Description
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.

Metadata

CVE ID
CVE-2026-58471
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-30 20:20 UTC
Published
2026-07-07 19:47 UTC
Last updated
2026-07-07 20:32 UTC
Primary CWE
CWE-122
Heap-based Buffer Overflow
Vendor / Product
gnuwget / wget
Sources
cve.org  ·  NVD

Severity & Metrics

5.9 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
gnuwget wget — 0 ≤ 1.25.0, c2640fe5171c59f87c58dc9fcb195b2d18b010ee
Weakness (CWE)
CWESourceDescription
CWE-122 cna Heap-based Buffer Overflow
CVSS scores (2)
ScoreSeverityVersionSourceVector
6.0 MEDIUM 4.0 cna 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
5.9 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H
References (2)
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