RegionCountryMap builds its map popup by concatenation and escaped every value
in it -- the name, the religion, the description, the image, both button labels
-- except the two URLs:
<a class="cm-popup__btn" href="${profileUrl}">
Both come from joinBase(props.researchUrl, p.slug), and joinBase says plainly
that it only normalises slashes. So two untrusted values reached an HTML
attribute raw: the slug, which is API data, and the base URL, which is an
attribute set by whoever embeds the element. With a slug of
`x" onerror=alert(1) data-x="` the rendered tag is
<a href="https://doxa.life/research/x" onerror=alert(1) data-x="">
out of the attribute and into new ones. esc() was already imported in that file.
The same omission in library/packet/packet-render.js, found by sweeping for the
class rather than assuming it was one site: the people-group card writes
src="${src}" where src is photos.get(slug), and usePosterPrints builds that Map
directly from the API's image_url. esc(g.name) sits two lines below it.
Neither could be caught by review or by template analysis -- both are inside
template literals -- and the popup had never once rendered, because the Regions
map was grey. So the gate: no href= or src= in built HTML takes a raw
interpolation. Data URLs, blob URLs, encodeURIComponent and safeUrl() are
recognised as safe, each verified at its call site rather than assumed from the
name; anything else needs an href-escaped-ok: reason in the four lines above.
Two such reasons are recorded, for the two sites the check cannot see the safety
of: useMapAttribution's hrefs are module constants selected by engine type, and
export-public builds its rel entirely from encodeURIComponent one line earlier.
The sweep also cleared seven sites it first flagged -- three blob: URLs from
createObjectURL, two data: URLs from readAsDataURL, safeUrl(), and the
encodeURIComponent pair -- so the check now recognises those shapes instead of
reporting them.
Mutation-tested: reverting either fix alone turns the gate red. 6 self-tests
carry the founding bug and the safe shapes. gates:pre 65/66, the one red being
check:poster-action-print waiting on gospel's GiTree fix.
Standalone repo that builds embeddable JAMstack map bundles (web components),
composes them into a lazy-loaded SPA via layouts/, and optionally wraps a
Capacitor Android/iOS app — one build, choose your output/CDN. Diátaxis docs.
History reset to a single clean commit; no PII, IPs, or internal terms.
