1sealsemantic last-mile verification

Research / Finding

Abnormal process termination in DNS UDP filter

F-ENVOY-001-002

Public snapshot: 26 Sep 2026. Status, releases and attribution belong to each source below; none is inferred from another record.

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Recorded evidence

5.9medium
CVE-2026-48497CVEenvoyproxy/envoy

Abnormal process termination in DNS UDP filter

Fixed in: Envoy 1.35.12, 1.36.8, 1.37.4, 1.38.2

patched
details
Finding IDs
F-ENVOY-001-002
CVE
CVE-2026-48497
GHSA
GHSA-j6g2-wf95-q66q
Status
patched
CWE
CWE-480
Fixed in
Envoy 1.35.12, 1.36.8, 1.37.4, 1.38.2
Recorded credit
finder: @1seal
Note
GHSA-j6g2-wf95-q66q · abnormal process termination in the Envoy DNS UDP filter for a 255-octet DNS query name. maps to local F-ENVOY-001-002; affected versions are <1.39 and patched versions are 1.35.12, 1.36.8, 1.37.4, and 1.38.2.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE registry state
PUBLISHED
CVE state checked
Upstream title
Abnormal process termination in DNS UDP filter
Upstream CWE
CWE-480
Upstream publication
Upstream updated
Metadata fetched
Upstream @1seal credit
@1seal: finder (accepted)

F-ENVOY-001-002: Input / state handling. A valid 255-octet DNS name violates an incorrect runtime precondition. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-ENVOY-001-002

Security area (1seal assessment): Availability. A valid 255-octet DNS name violates an incorrect runtime precondition. Reviewed 24 Sep 2026.

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