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unbound: Unbound: Denial of Service via DNSSEC query amplification bypass

🗓️ 22 Jul 2026 14:15:25Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Unbound allows bypassing upstream amplification limits via deeply nested DNSSEC-signed names causing DoS.

Related
Packages
Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-50045
22 Jul 202613:07
–attackerkb
alpinelinux
AlpineLinux
CVE-2026-50045
22 Jul 202613:07
–alpinelinux
cbl_mariner
CBLMariner
CVE-2026-50045 affecting package unbound for versions less than 1.25.2-1
23 Jul 202620:32
–cbl_mariner
circl
Circl
CVE-2026-50045
22 Jul 202613:54
–circl
cve
CVE
CVE-2026-50045
22 Jul 202613:07
–cve
cvelist
Cvelist
CVE-2026-50045 'max-global-quota' reset by DNSSEC validation restarts
22 Jul 202613:07
–cvelist
debian
Debian
[SECURITY] [DSA 6507-1] unbound security update
19 Sep 202615:00
–debian
debiancve
Debian CVE
CVE-2026-50045
22 Jul 202613:07
–debiancve
nessus
Tenable Nessus
Debian dsa-6507 : libunbound-dev - security update
21 Sep 202600:00
–nessus
nessus
Tenable Nessus
Fedora 43 : unbound (2026-3170ee6a1c)
31 Jul 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64python3-unbound1.25.2-0.1.hum1python3-unbound-1.25.2-0.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64python3-unbound1.25.2-0.1.hum1python3-unbound-1.25.2-0.1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound1.25.2-0.1.hum1unbound-1.25.2-0.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound1.25.2-0.1.hum1unbound-1.25.2-0.1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-anchor1.25.2-0.1.hum1unbound-anchor-1.25.2-0.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-anchor1.25.2-0.1.hum1unbound-anchor-1.25.2-0.1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-devel1.25.2-0.1.hum1unbound-devel-1.25.2-0.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-devel1.25.2-0.1.hum1unbound-devel-1.25.2-0.1.hum1.x86_64.rpm
Red Hat Hardened Imagesanyaarch64unbound-dracut1.25.2-0.1.hum1unbound-dracut-1.25.2-0.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64unbound-dracut1.25.2-0.1.hum1unbound-dracut-1.25.2-0.1.hum1.x86_64.rpm
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08 Oct 2026 23:10Current
6Medium risk
Vulners AI Score6
CVSS 3.15.3
EPSS0.00464
SSVC
8