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CVE-2026-58470— GNU Wget 1.25.0 Integer Overflow via Content-Range Header 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及之前版本存在数字错误漏洞，该漏洞源于parse_content_range()函数存在整数溢出，导致攻击者可以控制服务器值使签名的整数运算溢出，提供恶意的Content-Range标头值触发未定义行为和下载失步。

CVSS 5.3 · Medium EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
gnuwget wget ≤ 1.25.0 affected
43d3ba9336bc94937e6fae2365c6ffd30c34ffcf unaffected
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I. Basic Information for CVE-2026-58470

Vulnerability Information
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Vulnerability Title
GNU Wget 1.25.0 Integer Overflow via Content-Range Header Parsing
Source: CVE Program / CVE List V5
Vulnerability Description
GNU Wget through 1.25.0, fixed in commit 43d3ba9, contains an integer overflow vulnerability in the parse_content_range() function within src/http.c that allows server-controlled values to cause signed integer arithmetic to overflow. Attackers can supply malicious Content-Range header values to trigger undefined behavior and download desynchronization in the affected client.
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:L
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
GNU wget 数字错误漏洞
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及之前版本存在数字错误漏洞，该漏洞源于parse_content_range()函数存在整数溢出，导致攻击者可以控制服务器值使签名的整数运算溢出，提供恶意的Content-Range标头值触发未定义行为和下载失步。
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-2026-58470

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III. Intelligence Information for CVE-2026-58470

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Patches & Fixes for CVE-2026-58470 (1)

Vendor Advisories for CVE-2026-58470 (1)

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

CVE-2026-58469 7.5 HIGH GNU Wget 1.25.0 Heap Buffer Underread via Metalink URL Parsing
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

IV. Related Vulnerabilities

Same product: wget
Same vendor: gnuwget
Same weakness: CWE-190

V. Comments for CVE-2026-58470

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