Answer in brief
CVE-2026-40208 records a Low severity (CVSS 3.7) vulnerability in Denial of service via DoH3 queries. The current sources do not mark it as known exploited. The current feed maps PowerDNS/DNSdist (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps PowerDNS/DNSdist (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| PowerDNS/DNSdistgeneric | >=1.9.0 <1.9.15 || >=2.0.0 <2.0.7 | 1.9.15, 2.0.7 |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-40208 records a Low severity (CVSS 3.7) vulnerability in Denial of service via DoH3 queries. The current sources do not mark it as known exploited. The current feed maps PowerDNS/DNSdist (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 3.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps PowerDNS/DNSdist (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| PowerDNS/DNSdistgeneric | >=1.9.0 <1.9.15 || >=2.0.0 <2.0.7 | 1.9.15, 2.0.7 |
Published upstream
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jun 25, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 25, 2026
An attacker might be able to delay the processing of DoH3 queries by sending DoH3 GET queries with an invalid DATA frame.
Quoted source text, attributed separately from HOL analysis.