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CVE-2026-58469— GNU Wget 1.25.0 Heap Buffer Underread via Metalink URL Parsing

Quick assessment

Affected
gnuwget wget
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GNU wget是美国GNU基金会开源的一个文件下载工具。 GNU wget 1.25.0及之前版本存在缓冲区错误漏洞，该漏洞源于src/metalink.c文件中的clean_metalink_string()函数存在堆缓冲区越界读取问题，当处理仅包含空格的Metalink URL时，可能导致指针递减超出缓冲区起始位置，恶意服务器可通过提供包含空格URL的Metalink文档触发内存破坏，可能导致异常程序行为。

CVSS 7.5 · High EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
gnuwget wget ≤ 1.25.0 affected
37a40fcb450153f69537c7cbc2a7a4fb0b6f7826 unaffected
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I. Basic Information for CVE-2026-58469

Vulnerability Information
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Vulnerability Title
GNU Wget 1.25.0 Heap Buffer Underread via Metalink URL Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5
Vulnerability Title
GNU wget 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU wget是美国GNU基金会开源的一个文件下载工具。 GNU wget 1.25.0及之前版本存在缓冲区错误漏洞，该漏洞源于src/metalink.c文件中的clean_metalink_string()函数存在堆缓冲区越界读取问题，当处理仅包含空格的Metalink URL时，可能导致指针递减超出缓冲区起始位置，恶意服务器可通过提供包含空格URL的Metalink文档触发内存破坏，可能导致异常程序行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
gnuwget wget 0 ~ 1.25.0 -

II. Public POCs for CVE-2026-58469

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III. Intelligence Information for CVE-2026-58469

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Patches & Fixes for CVE-2026-58469 (1)

Vendor Advisories for CVE-2026-58469 (1)

Same Patch Batch · gnuwget · 2026-07-07 · 4 CVEs total

CVE-2026-58472 5.9 MEDIUM GNU Wget 1.25.0 Heap Buffer Overflow via HTML Attribute Encoding
CVE-2026-58471 5.9 MEDIUM GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c
CVE-2026-58470 5.3 MEDIUM GNU Wget 1.25.0 Integer Overflow via Content-Range Header Parsing

IV. Related Vulnerabilities

Same product: wget
Same vendor: gnuwget
Same weakness: CWE-125

V. Comments for CVE-2026-58469

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