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.
Metrics
Affected Vendors & Products
References
History
Thu, 25 Jun 2026 14:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-770 | |
| Metrics |
ssvc
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Thu, 25 Jun 2026 13:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Denial of service via crafted DoH3 queries | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: OX
Published:
Updated: 2026-06-25T13:45:02.430Z
Reserved: 2026-04-10T07:11:39.060Z
Link: CVE-2026-40211
Updated: 2026-06-25T13:44:49.368Z
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OpenCVE Enrichment
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