docker fetcher: strip sensitive headers on descriptor URLs

F-CONTAINERD-DESCURLS-001

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

Recorded evidence

—score not recorded

containerd/containerd #12889Security PRcontainerd/containerd

docker fetcher: strip sensitive headers on descriptor URLs

merged

details

Finding IDs: F-CONTAINERD-DESCURLS-001
Status: merged
Reported date: 12 Feb 2026
Rationale: prevents registry-scoped Authorization, Proxy-Authorization, Cookie, and Cookie2 headers from being forwarded to cross-origin descriptor URLs while preserving same-origin registry behavior. public PR #12889 merged into main on 2026-08-25 as commit d7bebd8.
PR opened by: @1seal
PR state observed: closed; GitHub merged: true; 2026-09-24
PR observation basis: Public PR metadata recorded in the 2026-09-24 evidence audit; not a live status feed.
Contribution boundary: @1seal opened this PR; this alone does not establish sole code authorship.

F-CONTAINERD-DESCURLS-001: Outbound request trust. Descriptor URLs can receive sensitive headers intended for a different destination. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-CONTAINERD-DESCURLS-001

Security area (1seal assessment): Authorization. Descriptor URLs can receive sensitive headers intended for a different destination. Reviewed 24 Sep 2026.

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