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CVE-2026-54478

🗓️ 22 Jul 2026 13:09:18Reported by NLnet LabsType 
cve
 cve
🔗 web.nvd.nist.gov👁 7 Views

DNS Cookie bypass in Unbound with proxy-protocol-port and answer-cookie enabled allows cookie reuse across PROXYv2 sources.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-54478
22 Jul 202613:09
attackerkb
Circl
CVE-2026-54478
22 Jul 202614:25
circl
Cvelist
CVE-2026-54478 DNS Cookie bypass when combined with proxy-protocol use
22 Jul 202613:09
cvelist
Debian CVE
CVE-2026-54478
22 Jul 202613:09
debiancve
EUVD
EUVD-2026-47678
22 Jul 202613:09
euvd
NVD
CVE-2026-54478
22 Jul 202614:17
nvd
OSV
DEBIAN-CVE-2026-54478
22 Jul 202617:48
osv
Positive Technologies
PT-2026-63386
22 Jul 202600:00
ptsecurity
Vulnrichment
CVE-2026-54478 DNS Cookie bypass when combined with proxy-protocol use
22 Jul 202613:09
vulnrichment
[
  {
    "vendor": "NLnet Labs",
    "product": "Unbound",
    "versions": [
      {
        "version": "1.18.0",
        "status": "affected",
        "lessThan": "1.25.2",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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22 Jul 2026 15:17Current
5.4Medium risk
Vulners AI Score5.4
CVSS 3.13.7
SSVC
7