The EchoLeak class (CVE-2025-32711): markdown image/link/refdef/autolink,
data: URIs and active HTML, plus the URL-shape analysis that separates a URL
naming a remote document from one carrying bytes outward.
Seeded from llm-ingestion-pipeline-security v0.3.4 @ 0bf0729 (read-only) —
active_content.py's pattern table and calibration.py's severities/floors.
That module documents itself as the canonical home of this table, which is
why the guard is the source here rather than llm-security.
One deliberate deviation from byte-identity, recorded in the file: five
patterns carried `\"` from Python raw strings, which is a SyntaxError under
ECMAScript's u/v flags. Normalised to `"` and proven equivalent by
differential match-set comparison (5 patterns x 30 adversarial inputs, 0
differences). Verification log in docs/extraction-plan.md.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0191AKc2qW6tmXDFSx1xn53q
Kjell Tore Guttormsen
43f682bedd