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CVE-2026-40011

An attacker sending a large number of crafted DNS queries might be able to trigger a dynamic block being inserted with a value causing invalid output to be produced in the prometheus endpoint. The prometheus endpoint will then be rejected by the scraper until the dynamic block expires.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:235a89d48beb0e928daa4799a64504c24b61dcacb712af5cdc0b1545f56b22e5
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"description":"Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/adp/0/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://repo.powerdns.com/","defaultStatus":"unaffected","modules":["Prometheus export"],"packageName":"dnsdist","product":"DNSdist","programFiles":["dnsdist-web.cc"],"repo":"https://github.com/PowerDNS/pdns","vendor":"PowerDNS","versions":[{"lessThan":"1.9.15","status":"affected","version":"1.9.0","versionType":"semver"},{"lessThan":"2.0.7","status":"affected","version":"2.0.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"description":"Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-116","description":"CWE-116 Improper Encoding or Escaping of Output","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/adp/0/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://www.dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2026-09.html"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:7f8f401af6ab2da8d49bdfcf07af823cad43a94f886ed09a44f5870f478e076d · sha256:28c6915cf4bc695e… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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