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TI-2026-42073 Aliases CVE-2026-58469GHSA-fxf9-rxpj-26gx

GNU Wget 1.25.0 Heap Buffer Underread via Metalink URL Parsing

Priority MEDIUM 44CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00493 42nd percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GNUwgetup to 1.25.0—Patch availableCNA
  • wget VendorGNU Affected up to 1.25.0 Fixed in — Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:*up to 1.25.0VulnerableGNU
  • cpe:2.3:a:gnu:wget:*:*:*:*:*:*:*:* Versions up to 1.25.0 Vulnerable ·GNU

Remediation

Red Hat 1 advisory

  • RHSA-2026:62144 Released 2026-09-01 · Red Hat rating Moderate
    wget security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) wget-1.19.5-16.el8_10

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:62144
Not affected: 4 products
  • Red Hat Enterprise Linux 10
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58469
  2. 2026-10-03 Alias added: GHSA-fxf9-rxpj-26gx

References

Patch 1

  • TI-2017-09727 GNU Wget: stack overflow in HTTP protocol handling CVSS 3.0HIGH 8.8
  • TI-2016-04293 GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a… CVSS 3.1HIGH 8.8
  • TI-2014-04014 Absolute path traversal vulnerability in GNU Wget before 1.16, when recursion is enabled… CVSS 2.0HIGH 9.3
  • TI-2017-09728 GNU Wget: heap overflow in HTTP protocol handling CVSS 3.0HIGH 8.8
  • TI-2019-04244 Out-of-bounds write in GNU Wget CVSS 3.0CRITICAL 9.8
  • TI-2016-06103 Race condition in wget 1.17 and earlier, when used in recursive or mirroring mode to… CVSS 3.0HIGH 8.1
See all 22 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences