certificate identity regex not auto-anchored enables identity policy bypass

F-SIG-016-001

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

sigstore/sigstore-go #558Security PRsigstore/sigstore-go

certificate identity regex not auto-anchored enables identity policy bypass

merged

details

Finding IDs: F-SIG-016-001
Status: merged
Reported date: 10 Jan 2026
Rationale: prevents identity policy bypass via unanchored regex matching.
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-SIG-016-001: Verification failures. An unanchored identity regex accepts a partial certificate-identity match. Reviewed 24 Sep 2026. Mechanism assessed by 1seal.

Mechanism source for F-SIG-016-001

Security area (1seal assessment): Identity. An unanchored identity regex accepts a partial certificate-identity match. Reviewed 24 Sep 2026.

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