CVE-2026-58469Network attack vector

Client crash via whitespace-only Metalink URL

Published Jul 7, 2026 · Updated Jul 7, 2026

Heap buffer underread in GNU Wget 1.25.0 and earlier allows remote attackers to crash the client via a whitespace-only Metalink URL. In src/metalink.c, clean_metalink_string() trims an all-whitespace value by decrementing its end pointer without preserving the buffer boundary. Exploitation requires Wget to process a Metalink document from a malicious server and affects availability without reported data disclosure or modification.

CVSS severity8.7
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer underread in GNU Wget 1.25.0 and earlier allows remote attackers to crash the client via a whitespace-only Metalink URL. In src/metalink.c, clean_metalink_string() trims an all-whitespace value by decrementing its end pointer without preserving the buffer boundary. Exploitation requires Wget to process a Metalink document from a malicious server and affects availability without reported data disclosure or modification.

The record

CVE
CVE-2026-58469
Published
Jul 7, 2026
Updated
Jul 7, 2026
Vendor
The GnuPG Project
Product
GNU Wget
Classifications
CWE-125, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.25.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The GnuPG Project · GNU Wgetversion=0 <=1.25.0

Published CVSS scores

7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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