CVE-2026-40211
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Denial of service via crafted DoH3 queries
An attacker can send crafted DNS over HTTP/3 queries, triggering an exception that prevents some buffer from being freed right away. The buffer will be freed at the end of the QUIC connection, but on some setups it might be possible to open enough concurrent DoH3 streams to trigger an out-of-memory condition, resulting in a denial of service.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
DNSdist
- Vendor
- PowerDNS
- Product
- DNSdist
- Platforms
- Unknown
- Default status
unaffected- Package
- dnsdist
- Package collection
- https://repo.powerdns.com/
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 1.9.0 | affected | semver | 1.9.15 | Unavailable | None listed |
| 2.0.0 | affected | semver | 2.0.7 | Unavailable | None listed |