Vulnerability-Lookup

RLSA-2026:62143 (CVE-2026-58471)

Vulnerability from osv_rocky – Published: 2026-09-02 06:05 – Updated: 2026-09-16 06:13 – Source website

Summary

Moderate: wget security, bug fix, and enhancement update

Details

The wget packages provide the GNU Wget file retrieval utility for HTTP, HTTPS, and FTP protocols.

Security Fix(es):

wget: GNU Wget: Heap buffer overflow via server-supplied filename leads to memory corruption (CVE-2026-58471)
wget: GNU Wget: Arbitrary code execution or denial of service via crafted HTML attribute (CVE-2026-58472)

Bug Fix(es) and Enhancement(s):

wget async unsafe code in signal handler context [rhel-9.8.z] (JIRA:Rocky Linux-220497)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Severity

5.9 (Medium)


                    
                      CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

Credits

Rocky Enterprise Software Foundation

Red Hat

References

URL

Type

	https://errata.rockylinux.org/RLSA-2026:62143	ADVISORY
	https://bugzilla.redhat.com/show_bug.cgi?id=2497850	REPORT
	https://bugzilla.redhat.com/show_bug.cgi?id=2497857	REPORT
	https://access.redhat.com/errata/RHSA-2026:62143	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Rocky Linux:9",
        "name": "wget",
        "purl": "pkg:rpm/rocky-linux/wget?distro=rocky-linux-9\u0026epoch=0"
      },
      "ranges": [
        {
          "database_specific": {
            "yum_repository": "AppStream"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0:1.21.1-11.el9_8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "credits": [
    {
      "name": "Rocky Enterprise Software Foundation"
    },
    {
      "name": "Red Hat"
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  "database_specific": {
    "license": "CC-BY-4.0",
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:62143"
  },
  "details": "The wget packages provide the GNU Wget file retrieval utility for HTTP, HTTPS, and FTP protocols.\n\nSecurity Fix(es):\n\n* wget: GNU Wget: Heap buffer overflow via server-supplied filename leads to memory corruption (CVE-2026-58471)\n\n* wget: GNU Wget: Arbitrary code execution or denial of service via crafted HTML attribute (CVE-2026-58472)\n\nBug Fix(es) and Enhancement(s):\n\n* wget async unsafe code in signal handler context [rhel-9.8.z] (JIRA:Rocky Linux-220497)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.",
  "id": "RLSA-2026:62143",
  "modified": "2026-09-16T06:13:18.512903Z",
  "published": "2026-09-02T06:05:06.352101Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://errata.rockylinux.org/RLSA-2026:62143"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497850"
    },
    {
      "type": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2497857"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:62143"
    }
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Moderate: wget security, bug fix, and enhancement update",
  "upstream": [
    "CVE-2026-58471",
    "CVE-2026-58472"
  ]
}

CVE-2026-58471 (GCVE-0-2026-58471)

Vulnerability from cvelistv5 – Published: 2026-07-07 19:47 – Updated: 2026-07-14 22:03 X_Open Source

Title

GNU Wget 1.25.0 Heap Buffer Overflow via convert_fname() in url.c

Summary

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.

Severity

6 (Medium)


                        
                          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)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-07 20:32 UTC

CWE

CWE-122 - Heap-based Buffer Overflow

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://gitlab.com/gnuwget/wget/-/commit/c2640fe5…	patch
https://www.vulncheck.com/advisories/gnu-wget-hea…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
gnuwget	wget	Affected: 0 , ≤ 1.25.0 (semver) Unaffected: c2640fe5171c59f87c58dc9fcb195b2d18b010ee (git) cpe:2.3:a:gnu:wget::::::::

Date Public

2026-01-13 00:00

Credits

Tristan Madani Arkadi Vainbrand

Show details on NVD website

JSON

To clipboard

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CVE-2026-58472 (GCVE-0-2026-58472)

Vulnerability from cvelistv5 – Published: 2026-07-07 19:50 – Updated: 2026-07-14 22:03 X_Open Source

Title

GNU Wget 1.25.0 Heap Buffer Overflow via HTML Attribute Encoding

Summary

GNU Wget through 1.25.0, fixed in commit dd692d9, contains a heap buffer overflow vulnerability in the html_quote_string() function in src/convert.c that allows a remote attacker to trigger memory corruption by supplying a crafted HTML attribute with a large number of characters requiring entity encoding. A server-supplied HTML attribute causes a signed integer counter to overflow during output size accumulation, resulting in an undersized heap allocation and subsequent heap buffer overflow during the copy phase.

Severity

6 (Medium)


                        
                          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)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-08 13:45 UTC

CWE

CWE-190 - Integer Overflow or Wraparound

Assigner

VulnCheck mitre root

References

2 references

URL	Tags
https://gitlab.com/gnuwget/wget/-/commit/dd692d9c…	patch
https://www.vulncheck.com/advisories/gnu-wget-hea…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
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Date Public

2026-06-29 00:00

Credits

Tristan Madani

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RLSA-2026:62143 (CVE-2026-58471)

CVE-2026-58471 (GCVE-0-2026-58471)

CVE-2026-58472 (GCVE-0-2026-58472)

Tags

Sightings

Nomenclature

Related by attack behaviour