1sealsemantic last-mile verification

Research / Finding

download-artifact v8: content-type gated artifact decompression

F-GHA-ARTNAME-001

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

—score not recorded
actions/download-artifactReported fixactions/download-artifact

download-artifact v8: content-type gated artifact decompression

fixed publicly (no GHSA/CVE)
details
Finding IDs
F-GHA-ARTNAME-001
Status
fixed publicly (no GHSA/CVE)
Reported via
HackerOne
Note
public hardening shipped in actions/download-artifact v8.0.0 on 2026-02-26: the action no longer attempts to unzip every downloaded file and checks Content-Type before extraction via PR #460. v8.0.1 on 2026-03-11 added a regression test for artifact name + content-type mismatches via PR #472. attribution linkage is inferred from topic and timing; no GHSA/CVE was published.

F-GHA-ARTNAME-001: Needs source detail. The public artifact-hardening cluster does not establish an exact report-to-fix mapping. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-GHA-ARTNAME-001

Security area (1seal assessment): Unclassified. The release contains both archive-type handling and digest enforcement. The existing report-to-change mapping is inferred, so neither area is assigned to this finding without a precise match. Reviewed 24 Sep 2026.

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How this page groups evidence

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