Vulnerability-Lookup

CVE-2026-4890 (GCVE-0-2026-4890)

Vulnerability from cvelistv5 – Published: 2026-05-11 16:47 – Updated: 2026-07-23 12:08

Title

CVE-2026-4890

Summary

A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-835 - Loop with Unreachable Termination
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

certcc

References

14 references

URL	Tags
https://www.kb.cert.org/vuls/id/471747
https://lists.thekelleys.org.uk/pipermail/dnsmasq…
https://thekelleys.org.uk/dnsmasq/CVE/
https://github.com/NixOS/nixpkgs/pull/519093
https://github.com/NixOS/nixpkgs/pull/519082
https://github.com/pi-hole/FTL/releases/tag/v6.6.2
https://access.redhat.com/security/cve/CVE-2026-4890	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2458516	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:40762	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19158	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:20589	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34508	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:19373	vendor-advisoryx_refsource_REDHAT

Impacted products

8 products

Vendor	Product	Version
dnsmasq	dnsmasq	Affected: 0 , < 2.92rel2 (custom)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:2.90-7.el10_2 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:2.79-36.el8_10 , < * (rpm) cpe:/a:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:2.85-18.el9_8.1 , < * (rpm) cpe:/a:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 9.6 Extended Update Support	Unaffected: 0:2.85-17.el9_6.1 , < * (rpm) cpe:/a:redhat:rhel_eus:9.6
Red Hat	Red Hat OpenShift Container Platform 4.19	Unaffected: 4.19.9.6.202607151909-0 , < * (rpm) cpe:/a:redhat:openshift:4.19::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7

Show details on NVD website

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    },
    "suse_vex": {
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      "current_release_date": "2026-07-09T03:11:40Z",
      "cve": "CVE-2026-4890",
      "id": "CVE-2026-4890",
      "initial_release_date": "2026-05-13T03:48:40Z",
      "product_status:known_affected": "8",
      "product_status:recommended": "42",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-4890",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-4890.json",
      "version": "18"
    },
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      "cveMetadata": "{\"cveId\": \"CVE-2026-4890\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-23T12:08:00.788Z\", \"dateReserved\": \"2026-03-26T13:05:10.729Z\", \"assignerOrgId\": \"37e5125f-f79b-445b-8fad-9564f167944b\", \"datePublished\": \"2026-05-11T16:47:16.419Z\", \"assignerShortName\": \"certcc\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

ubuntu-cve-2026-4890

Vulnerability from osv_ubuntu

Published

2026-05-11 12:00

Modified

2026-06-30 16:18

Summary

Details

A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.

Severity

7.5 (High)


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

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-4890	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-4890	REPORT
	https://ubuntu.com/security/notices/USN-8268-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dnsmasq",
            "binary_version": "2.90-0ubuntu0.16.04.1+esm3"
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          {
            "binary_name": "dnsmasq-base",
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          },
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            "binary_name": "dnsmasq-base-lua",
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          }
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      },
      "package": {
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        "name": "dnsmasq",
        "purl": "pkg:deb/ubuntu/dnsmasq@2.90-0ubuntu0.16.04.1+esm3?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.90-0ubuntu0.16.04.1+esm3"
            }
          ],
          "type": "ECOSYSTEM"
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      ],
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        "2.75-1",
        "2.75-1ubuntu0.16.04.1",
        "2.75-1ubuntu0.16.04.2",
        "2.75-1ubuntu0.16.04.3",
        "2.75-1ubuntu0.16.04.4",
        "2.75-1ubuntu0.16.04.5",
        "2.75-1ubuntu0.16.04.7",
        "2.75-1ubuntu0.16.04.8",
        "2.75-1ubuntu0.16.04.10",
        "2.75-1ubuntu0.16.04.10+esm1",
        "2.79-1ubuntu0.16.04.1+esm1",
        "2.79-1ubuntu0.16.04.1+esm2",
        "2.90-0ubuntu0.16.04.1+esm1"
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    },
    {
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          {
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          {
            "binary_name": "dnsmasq-utils",
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      },
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      },
      "ranges": [
        {
          "events": [
            {
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            {
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          ],
          "type": "ECOSYSTEM"
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      "versions": [
        "2.78-1",
        "2.78-3",
        "2.79-1",
        "2.79-1ubuntu0.2",
        "2.79-1ubuntu0.3",
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        "2.79-1ubuntu0.5",
        "2.79-1ubuntu0.6",
        "2.79-1ubuntu0.7",
        "2.90-0ubuntu0.18.04.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dnsmasq",
            "binary_version": "2.90-0ubuntu0.20.04.1+esm2"
          },
          {
            "binary_name": "dnsmasq-base",
            "binary_version": "2.90-0ubuntu0.20.04.1+esm2"
          },
          {
            "binary_name": "dnsmasq-base-lua",
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            "binary_name": "dnsmasq-utils",
            "binary_version": "2.90-0ubuntu0.20.04.1+esm2"
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        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "dnsmasq",
        "purl": "pkg:deb/ubuntu/dnsmasq@2.90-0ubuntu0.20.04.1+esm2?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
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          "events": [
            {
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            },
            {
              "fixed": "2.90-0ubuntu0.20.04.1+esm2"
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      "versions": [
        "2.80-1ubuntu2",
        "2.80-1ubuntu4",
        "2.80-1.1ubuntu1",
        "2.80-1.1ubuntu1.2",
        "2.80-1.1ubuntu1.3",
        "2.80-1.1ubuntu1.4",
        "2.80-1.1ubuntu1.5",
        "2.80-1.1ubuntu1.6",
        "2.80-1.1ubuntu1.7",
        "2.90-0ubuntu0.20.04.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dnsmasq",
            "binary_version": "2.90-0ubuntu0.22.04.3"
          },
          {
            "binary_name": "dnsmasq-base",
            "binary_version": "2.90-0ubuntu0.22.04.3"
          },
          {
            "binary_name": "dnsmasq-base-lua",
            "binary_version": "2.90-0ubuntu0.22.04.3"
          },
          {
            "binary_name": "dnsmasq-utils",
            "binary_version": "2.90-0ubuntu0.22.04.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "dnsmasq",
        "purl": "pkg:deb/ubuntu/dnsmasq@2.90-0ubuntu0.22.04.3?arch=source\u0026distro=jammy"
      },
      "ranges": [
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          "type": "ECOSYSTEM"
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      ],
      "versions": [
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        "2.86-1.1",
        "2.86-1.1ubuntu0.1",
        "2.86-1.1ubuntu0.2",
        "2.86-1.1ubuntu0.3",
        "2.86-1.1ubuntu0.4",
        "2.86-1.1ubuntu0.5",
        "2.90-0ubuntu0.22.04.1"
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    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dnsmasq",
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          },
          {
            "binary_name": "dnsmasq-base",
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          },
          {
            "binary_name": "dnsmasq-base-lua",
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            "binary_name": "dnsmasq-utils",
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      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "dnsmasq",
        "purl": "pkg:deb/ubuntu/dnsmasq@2.90-2ubuntu0.3?arch=source\u0026distro=noble"
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        "2.90-2build2",
        "2.90-2ubuntu0.1"
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    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "dnsmasq",
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          },
          {
            "binary_name": "dnsmasq-base",
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            "binary_name": "dnsmasq-base-lua",
            "binary_version": "2.91-1ubuntu0.2"
          },
          {
            "binary_name": "dnsmasq-utils",
            "binary_version": "2.91-1ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "dnsmasq",
        "purl": "pkg:deb/ubuntu/dnsmasq@2.91-1ubuntu0.2?arch=source\u0026distro=questing"
      },
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              "introduced": "0"
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            {
              "fixed": "2.91-1ubuntu0.2"
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      ],
      "versions": [
        "2.91-1",
        "2.91-1build1"
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    },
    {
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          {
            "binary_name": "dnsmasq",
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          {
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          },
          {
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        "2.91-1build1",
        "2.92~rc3-1",
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  ],
  "aliases": [],
  "details": "A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.",
  "id": "UBUNTU-CVE-2026-4890",
  "modified": "2026-06-30T16:18:36Z",
  "published": "2026-05-11T12:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-4890"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-4890"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8268-1"
    }
  ],
  "related": [
    "USN-8268-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-4890"
  ]
}

WID-SEC-W-2026-1468

Vulnerability from csaf_certbund - Published: 2026-05-11 22:00 - Updated: 2026-06-10 22:00

Summary

dnsmasq: Mehrere Schwachstellen

Severity

Hoch

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Dnsmasq ist ein leichtgewichtiger DNS- und DHCP Server.

Angriff: Ein Angreifer kann mehrere Schwachstellen in dnsmasq ausnutzen, um einen Denial-of-Service-Zustand zu verursachen, beliebigen Code mit Root-Rechten auszuführen, vertrauliche Informationen offenzulegen, Daten zu manipulieren und Benutzer auf bösartige Domains umzuleiten

Betroffene Betriebssysteme: - Linux - UNIX

CVE-2026-2291

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

CVE-2026-4892

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

CVE-2026-4893

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

CVE-2026-5172

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

CVE-2026-4891

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

CVE-2026-4890

Affected products

Known affected 10 products

Product	Identifier	Version
Open Source dnsmasq <2.92rel2 Open Source / dnsmasq		<2.92rel2
Debian Linux Debian	`cpe:/o:debian:debian_linux:-`	—
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Amazon Linux 2 Amazon	`cpe:/o:amazon:linux_2:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

References

28 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.kb.cert.org/vuls/id/471747	external
https://thekelleys.org.uk/dnsmasq/CHANGELOG	external
https://lists.debian.org/debian-security-announce…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://ubuntu.com/security/notices/USN-8268-1	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.opensuse.org/archives/list/security…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://access.redhat.com/errata/RHSA-2026:19373	external
https://access.redhat.com/errata/RHSA-2026:19158	external
https://lists.opensuse.org/archives/list/security…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://access.redhat.com/errata/RHSA-2026:20589	external
https://linux.oracle.com/errata/ELSA-2026-20589.html	external
https://alas.aws.amazon.com/AL2/ALAS2-2026-3318.html	external
https://alas.aws.amazon.com/AL2/ALAS2DNSMASQ-2026…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://errata.build.resf.org/RLSA-2026:20589	external
https://lists.debian.org/debian-lts-announce/2026…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "hoch"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Dnsmasq ist ein leichtgewichtiger DNS- und DHCP Server.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer kann mehrere Schwachstellen in dnsmasq ausnutzen, um einen Denial-of-Service-Zustand zu verursachen, beliebigen Code mit Root-Rechten auszuf\u00fchren, vertrauliche Informationen offenzulegen, Daten zu manipulieren und Benutzer auf b\u00f6sartige Domains umzuleiten",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1468 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1468.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1468 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1468"
      },
      {
        "category": "external",
        "summary": "CERT Coordination Center vom 2026-05-11",
        "url": "https://www.kb.cert.org/vuls/id/471747"
      },
      {
        "category": "external",
        "summary": "dnsmasq Changelog vom 2026-05-11",
        "url": "https://thekelleys.org.uk/dnsmasq/CHANGELOG"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DSA-6264 vom 2026-05-11",
        "url": "https://lists.debian.org/debian-security-announce/2026/msg00175.html"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-AC5CCEEC13 vom 2026-05-12",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-ac5cceec13"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-6384A3CF14 vom 2026-05-12",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-6384a3cf14"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1827-1 vom 2026-05-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026015.html"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-8268-1 vom 2026-05-13",
        "url": "https://ubuntu.com/security/notices/USN-8268-1"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1826-1 vom 2026-05-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026016.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1828-1 vom 2026-05-13",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026014.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21640-1 vom 2026-05-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026052.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21626-1 vom 2026-05-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026066.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21633-1 vom 2026-05-15",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026059.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1934-1 vom 2026-05-18",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026121.html"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:20748-1 vom 2026-05-19",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/RQFO6J45PPUW5LJFB2HSLIVIAQLUV75Z/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21677-1 vom 2026-05-19",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026158.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:19373 vom 2026-05-20",
        "url": "https://access.redhat.com/errata/RHSA-2026:19373"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:19158 vom 2026-05-19",
        "url": "https://access.redhat.com/errata/RHSA-2026:19158"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:10821-1 vom 2026-05-21",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/ZVZVK3B6N4KRDHO7EXWKA5KSCH5VKF5K/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21733-1 vom 2026-05-22",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026266.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:20589 vom 2026-05-26",
        "url": "https://access.redhat.com/errata/RHSA-2026:20589"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-20589 vom 2026-05-26",
        "url": "https://linux.oracle.com/errata/ELSA-2026-20589.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2026-3318 vom 2026-05-26",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2026-3318.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2DNSMASQ-2026-004 vom 2026-05-26",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2DNSMASQ-2026-004.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:21788-1 vom 2026-05-27",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-May/026352.html"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:20589 vom 2026-05-29",
        "url": "https://errata.build.resf.org/RLSA-2026:20589"
      },
      {
        "category": "external",
        "summary": "Debian Security Advisory DLA-4625 vom 2026-06-10",
        "url": "https://lists.debian.org/debian-lts-announce/2026/06/msg00014.html"
      }
    ],
    "source_lang": "en-US",
    "title": "dnsmasq: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2026-06-10T22:00:00.000+00:00",
      "generator": {
        "date": "2026-06-11T10:21:22.521+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.6.0"
        }
      },
      "id": "WID-SEC-W-2026-1468",
      "initial_release_date": "2026-05-11T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-05-11T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-05-12T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von Fedora aufgenommen"
        },
        {
          "date": "2026-05-14T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von SUSE und Ubuntu aufgenommen"
        },
        {
          "date": "2026-05-17T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-18T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-19T22:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von SUSE und Red Hat aufgenommen"
        },
        {
          "date": "2026-05-21T22:00:00.000+00:00",
          "number": "7",
          "summary": "Neue Updates von openSUSE aufgenommen"
        },
        {
          "date": "2026-05-25T22:00:00.000+00:00",
          "number": "8",
          "summary": "Neue Updates von SUSE und Red Hat aufgenommen"
        },
        {
          "date": "2026-05-26T22:00:00.000+00:00",
          "number": "9",
          "summary": "Neue Updates von Oracle Linux und Amazon aufgenommen"
        },
        {
          "date": "2026-05-27T22:00:00.000+00:00",
          "number": "10",
          "summary": "Neue Updates von SUSE aufgenommen"
        },
        {
          "date": "2026-05-28T22:00:00.000+00:00",
          "number": "11",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation aufgenommen"
        },
        {
          "date": "2026-06-10T22:00:00.000+00:00",
          "number": "12",
          "summary": "Neue Updates von Debian aufgenommen"
        }
      ],
      "status": "final",
      "version": "12"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Debian Linux",
            "product": {
              "name": "Debian Linux",
              "product_id": "2951",
              "product_identification_helper": {
                "cpe": "cpe:/o:debian:debian_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Debian"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74185",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c2.92rel2",
                "product": {
                  "name": "Open Source dnsmasq \u003c2.92rel2",
                  "product_id": "T053807"
                }
              },
              {
                "category": "product_version",
                "name": "2.92rel2",
                "product": {
                  "name": "Open Source dnsmasq 2.92rel2",
                  "product_id": "T053807-fixed",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:dnsmasq:dnsmasq:2.92rel2"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "dnsmasq"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T004914",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "RESF Rocky Linux",
            "product": {
              "name": "RESF Rocky Linux",
              "product_id": "T032255",
              "product_identification_helper": {
                "cpe": "cpe:/o:resf:rocky_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "RESF"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Red Hat Enterprise Linux",
            "product": {
              "name": "Red Hat Enterprise Linux",
              "product_id": "67646",
              "product_identification_helper": {
                "cpe": "cpe:/o:redhat:enterprise_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "SUSE Linux",
            "product": {
              "name": "SUSE Linux",
              "product_id": "T002207",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:suse_linux:-"
              }
            }
          },
          {
            "category": "product_name",
            "name": "SUSE openSUSE",
            "product": {
              "name": "SUSE openSUSE",
              "product_id": "T027843",
              "product_identification_helper": {
                "cpe": "cpe:/o:suse:opensuse:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Ubuntu Linux",
            "product": {
              "name": "Ubuntu Linux",
              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-2291",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-2291"
    },
    {
      "cve": "CVE-2026-4892",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-4892"
    },
    {
      "cve": "CVE-2026-4893",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-4893"
    },
    {
      "cve": "CVE-2026-5172",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-5172"
    },
    {
      "cve": "CVE-2026-4891",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-4891"
    },
    {
      "cve": "CVE-2026-4890",
      "product_status": {
        "known_affected": [
          "T053807",
          "2951",
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "398363",
          "T004914",
          "T032255",
          "74185"
        ]
      },
      "release_date": "2026-05-11T22:00:00.000+00:00",
      "title": "CVE-2026-4890"
    }
  ]
}

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.

Action not permitted

CVE-2026-4890 (GCVE-0-2026-4890)

ubuntu-cve-2026-4890

Vulnerability from osv_ubuntu

WID-SEC-W-2026-1468

Tags

Sightings

Nomenclature