GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-42005 (GCVE-0-2026-42005)

Vulnerability from cvelistv5 – Published: 2026-06-25 11:57 – Updated: 2026-06-25 13:04
VLAI
Title
Insufficient input validation of internal web server
Summary
An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-25 13:03 UTC
CWE
  • Allocation of Resources Without Limits or Throttling
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
Impacted products
Vendor Product Version CPE status
PowerDNS Authoritative Affected: 4.9.0 , < 4.9.16 (semver)
Affected: 5.0.0 , < 5.0.6 (semver)
Affected: 5.1.0 , < 5.1.2 (semver)
guessed Create a notification for this product.
Date Public
2026-06-10 22:00
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42005",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-25T13:03:44.259390Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-400",
                "description": "CWE-400 Uncontrolled Resource Consumption",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-25T13:04:12.854Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://repo.powerdns.com/",
          "defaultStatus": "unaffected",
          "modules": [
            "YaHTTP"
          ],
          "packageName": "pdns",
          "product": "Authoritative",
          "programFiles": [
            "ext/yahttp/yahttp/reqresp.cpp"
          ],
          "repo": "https://github.com/PowerDNS/pdns",
          "vendor": "PowerDNS",
          "versions": [
            {
              "lessThan": "4.9.16",
              "status": "affected",
              "version": "4.9.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.0.6",
              "status": "affected",
              "version": "5.0.0",
              "versionType": "semver"
            },
            {
              "lessThan": "5.1.2",
              "status": "affected",
              "version": "5.1.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "ilya rozentsvaig"
        }
      ],
      "datePublic": "2026-06-10T22:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "An attacker can send a web request that causes unlimited memory \nallocation in the internal web server, leading to a denial of service. \nThe internal web server is disabled by default."
            }
          ],
          "value": "An attacker can send a web request that causes unlimited memory \nallocation in the internal web server, leading to a denial of service. \nThe internal web server is disabled by default."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Allocation of Resources Without Limits or Throttling",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T11:57:16.346Z",
        "orgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
        "shortName": "OX"
      },
      "references": [
        {
          "url": "https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Insufficient input validation of internal web server",
      "x_generator": {
        "engine": "Vulnogram 1.0.2"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8ce71d90-2354-404b-a86e-bec2cc4e6981",
    "assignerShortName": "OX",
    "cveId": "CVE-2026-42005",
    "datePublished": "2026-06-25T11:57:16.346Z",
    "dateReserved": "2026-04-23T11:15:21.199Z",
    "dateUpdated": "2026-06-25T13:04:12.854Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-42005",
      "date": "2026-09-16",
      "epss": "0.00344",
      "percentile": "0.27755"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-42005\",\"sourceIdentifier\":\"security@open-xchange.com\",\"published\":\"2026-06-25T12:16:47.350\",\"lastModified\":\"2026-06-25T16:00:30.783\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An attacker can send a web request that causes unlimited memory \\nallocation in the internal web server, leading to a denial of service. \\nThe internal web server is disabled by default.\"}],\"affected\":[{\"source\":\"security@open-xchange.com\",\"affectedData\":[{\"vendor\":\"PowerDNS\",\"product\":\"Authoritative\",\"defaultStatus\":\"unaffected\",\"collectionURL\":\"https://repo.powerdns.com/\",\"packageName\":\"pdns\",\"modules\":[\"YaHTTP\"],\"programFiles\":[\"ext/yahttp/yahttp/reqresp.cpp\"],\"repo\":\"https://github.com/PowerDNS/pdns\",\"versions\":[{\"version\":\"4.9.0\",\"lessThan\":\"4.9.16\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.0.0\",\"lessThan\":\"5.0.6\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.1.0\",\"lessThan\":\"5.1.2\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@open-xchange.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\",\"baseScore\":4.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.8,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-06-25T13:03:44.259390Z\",\"id\":\"CVE-2026-42005\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"references\":[{\"url\":\"https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html\",\"source\":\"security@open-xchange.com\"}]}}",
    "redhat_vex": {
      "current_release_date": "2026-06-26T20:36:57+00:00",
      "cve": "CVE-2026-42005",
      "id": "CVE-2026-42005",
      "initial_release_date": "2026-06-25T11:57:16.346000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "pdns: insufficient input validation of internal web server",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42005.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-11T01:23:36Z",
      "cve": "CVE-2026-42005",
      "id": "CVE-2026-42005",
      "initial_release_date": "2026-06-26T02:19:01Z",
      "product_status:known_affected": "30",
      "product_status:known_not_affected": "3",
      "product_status:recommended": "4",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-42005",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-42005.json",
      "version": "5"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-42005\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-06-25T13:03:44.259390Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-400\", \"description\": \"CWE-400 Uncontrolled Resource Consumption\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-06-25T13:04:09.406Z\"}}], \"cna\": {\"title\": \"Insufficient input validation of internal web server\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"ilya rozentsvaig\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.3, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"LOW\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/PowerDNS/pdns\", \"vendor\": \"PowerDNS\", \"modules\": [\"YaHTTP\"], \"product\": \"Authoritative\", \"versions\": [{\"status\": \"affected\", \"version\": \"4.9.0\", \"lessThan\": \"4.9.16\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.0.0\", \"lessThan\": \"5.0.6\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"5.1.0\", \"lessThan\": \"5.1.2\", \"versionType\": \"semver\"}], \"packageName\": \"pdns\", \"programFiles\": [\"ext/yahttp/yahttp/reqresp.cpp\"], \"collectionURL\": \"https://repo.powerdns.com/\", \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-06-10T22:00:00.000Z\", \"references\": [{\"url\": \"https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-07.html\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.2\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An attacker can send a web request that causes unlimited memory \\nallocation in the internal web server, leading to a denial of service. \\nThe internal web server is disabled by default.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An attacker can send a web request that causes unlimited memory \\nallocation in the internal web server, leading to a denial of service. \\nThe internal web server is disabled by default.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"Allocation of Resources Without Limits or Throttling\"}]}], \"providerMetadata\": {\"orgId\": \"8ce71d90-2354-404b-a86e-bec2cc4e6981\", \"shortName\": \"OX\", \"dateUpdated\": \"2026-06-25T11:57:16.346Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-42005\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-25T13:04:12.854Z\", \"dateReserved\": \"2026-04-23T11:15:21.199Z\", \"assignerOrgId\": \"8ce71d90-2354-404b-a86e-bec2cc4e6981\", \"datePublished\": \"2026-06-25T11:57:16.346Z\", \"assignerShortName\": \"OX\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.

Loading…

Detection rules are retrieved from Rulezet.

Loading…

Loading…

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


Loading…