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CVE-2026-33258 Crafted zones can cause increased resource usage

🗓️ 22 Apr 2026 09:38:19Reported by OXType 
cvelist
 cvelist
🔗 www.cve.org👁 28 Views

Publishing and querying a crafted zone can cause large allocations in negative and aggressive NSEC3 caches.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-33258
22 Apr 202609:38
attackerkb
AlpineLinux
CVE-2026-33258
22 Apr 202609:38
alpinelinux
Circl
CVE-2026-33258
22 Apr 202612:17
circl
CNNVD
PowerDNS Recursor(pdns_recursor) 安全漏洞
22 Apr 202600:00
cnnvd
CVE
CVE-2026-33258
22 Apr 202609:38
cve
Debian
[SECURITY] [DSA 6234-1] pdns-recursor security update
28 Apr 202619:03
debian
Debian CVE
CVE-2026-33258
22 Apr 202609:38
debiancve
Tenable Nessus
Debian dsa-6234 : pdns-recursor - security update
29 Apr 202600:00
nessus
Tenable Nessus
Linux Distros Unpatched Vulnerability : CVE-2026-33258
23 Apr 202600:00
nessus
EUVD
EUVD-2026-24721
22 Apr 202612:30
euvd
Rows per page
[
  {
    "vendor": "PowerDNS",
    "product": "Recursor",
    "collectionURL": "https://repo.powerdns.com/",
    "packageName": "pdns-recursor",
    "repo": "https://github.com/PowerDNS/pdns",
    "modules": [
      "Negative cache",
      "Aggressive use of NSEC cache"
    ],
    "programFiles": [
      "aggressive_nsec.cc",
      "negcache.cc"
    ],
    "versions": [
      {
        "status": "affected",
        "version": "5.4.0",
        "lessThan": "5.4.1",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.3.0",
        "lessThan": "5.3.6",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "5.2.0",
        "lessThan": "5.2.9",
        "versionType": "semver"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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22 Apr 2026 09:38Current
CVSS 3.15.3
EPSS0.00002
28