Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-42004

An attacker can send a crafted EDNS OPT record that will be ignored by DNSdist’s filtering rules, but will be rewritten as a valid OPT record when EDNS Client Subnet is inserted, causing the backend to see the EDNS option(s) that DNSdist did not filter.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:174c736a8a549816437223d2dc2242aa60550c20c995370e4495edcdc462f4a3
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

{"cweId":"CWE-115","description":"CWE-115 Misinterpretation of Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /containers/adp/0/problemTypes/0/descriptions/0

{"description":"Misinterpretation of Input","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"collectionURL":"https://repo.powerdns.com/","defaultStatus":"unaffected","modules":["EDNS processing"],"packageName":"dnsdist","product":"DNSdist","programFiles":["dnsdist-ecs.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:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /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:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-115","description":"CWE-115 Misinterpretation of Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /containers/adp/0/problemTypes/0/descriptions/0
{"description":"Misinterpretation of Input","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /containers/cna/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:v2:30cc99b9750764d8f81f564db0f4064d239c127b6acd6b255ab60ac12b9cb6b5 · sha256:0033a7ed91ba5977… · /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.

← Back to CVE Explorer