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RHSA-2026:20589
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Source
https://access.redhat.com/errata/RHSA-2026:20589
Import Source
https://security.access.redhat.com/data/osv/RHSA-2026:20589.json
JSON Data
https://api.osv.dev/v1/vulns/RHSA-2026:20589
Upstream
CVE-2026-2291
CVE-2026-4890
CVE-2026-4891
CVE-2026-4892
CVE-2026-4893
Published
2026-05-26T10:07:41Z
Modified
2026-05-26T10:32:21.589359908Z
Severity
8.8 (High)
CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Calculator
Summary
Red Hat Security Advisory: dnsmasq security update
Details
References
https://access.redhat.com/errata/RHSA-2026:20589
https://access.redhat.com/security/updates/classification/#important
https://bugzilla.redhat.com/show_bug.cgi?id=2439088
https://bugzilla.redhat.com/show_bug.cgi?id=2458516
https://bugzilla.redhat.com/show_bug.cgi?id=2458517
https://bugzilla.redhat.com/show_bug.cgi?id=2458518
https://bugzilla.redhat.com/show_bug.cgi?id=2458519
https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_20589.json
https://access.redhat.com/security/cve/CVE-2026-2291
https://www.cve.org/CVERecord?id=CVE-2026-2291
https://nvd.nist.gov/vuln/detail/CVE-2026-2291
https://access.redhat.com/security/cve/CVE-2026-4890
https://www.cve.org/CVERecord?id=CVE-2026-4890
https://nvd.nist.gov/vuln/detail/CVE-2026-4890
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html
https://access.redhat.com/security/cve/CVE-2026-4891
https://www.cve.org/CVERecord?id=CVE-2026-4891
https://nvd.nist.gov/vuln/detail/CVE-2026-4891
https://access.redhat.com/security/cve/CVE-2026-4892
https://www.cve.org/CVERecord?id=CVE-2026-4892
https://nvd.nist.gov/vuln/detail/CVE-2026-4892
https://access.redhat.com/security/cve/CVE-2026-4893
https://www.cve.org/CVERecord?id=CVE-2026-4893
https://nvd.nist.gov/vuln/detail/CVE-2026-4893
Affected packages
Red Hat:enterprise_linux:8::appstream
dnsmasq
Package
Name
dnsmasq
Purl
pkg:rpm/redhat/dnsmasq
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:2.79-36.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:20589.json"
dnsmasq-debuginfo
Package
Name
dnsmasq-debuginfo
Purl
pkg:rpm/redhat/dnsmasq-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:2.79-36.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:20589.json"
dnsmasq-debugsource
Package
Name
dnsmasq-debugsource
Purl
pkg:rpm/redhat/dnsmasq-debugsource
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:2.79-36.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:20589.json"
dnsmasq-utils
Package
Name
dnsmasq-utils
Purl
pkg:rpm/redhat/dnsmasq-utils
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:2.79-36.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:20589.json"
dnsmasq-utils-debuginfo
Package
Name
dnsmasq-utils-debuginfo
Purl
pkg:rpm/redhat/dnsmasq-utils-debuginfo
Affected ranges
Type
ECOSYSTEM
Events
Introduced
0
Unknown introduced version / All previous versions are affected
Fixed
0:2.79-36.el8_10
Database specific
source
"https://security.access.redhat.com/data/osv/RHSA-2026:20589.json"
RHSA-2026:20589 - OSV