The Engagement Report tab wrote STAFF_REPORT_KEY into the iframe src for
every user with "access CiviCRM", without checking contact permissions.
Anyone could copy it from the DOM and read any org's report and files,
bypassing Civi ACLs; the key never expired and landed in access logs.
- Extension (0.4.0): Tab.php checks Contact_Permission::allow(VIEW) and
mints sig = base64url(HMAC-SHA256(key, "webform-mw.staff-report.v1:
<org>:<exp>")) with an 8h exp. The secret no longer leaves the server.
- App: lib/staff-token.mjs verifies the token (constant-time, org must
match, rejects expired or >12h tokens). /staff/report, /api/staff/report
and /api/staff/file share staffAuthQuery(); client links carry exp/sig.
- Legacy ?key= is still accepted (constant-time compare, logs a warning)
so the app can deploy before the extension. Remove it once every Civi
install runs extension 0.4.0.
- PHP/Node signature compatibility is pinned by a PHP-generated vector.
The staff-report iframe is expanded to full content height (no nested
scrollbar), so a modal <dialog> centered in its viewport landed in the
middle of the whole document and sat off-screen unless the parent page
was scrolled there. Cross-origin means the iframe can't read the
parent's scroll position itself.
Tab.tpl now broadcasts the iframe's visible slice (webform-mw-viewport,
rAF-throttled on scroll/resize/load and after each height change), and
AttachmentLightbox pins to that slice and fills its height. Falls back
to a fixed box when no viewport message arrives (older extension), and
standalone mode keeps native centering at a taller 85vh.
Extension bumped to 0.3.1 (template change -> re-copy + cv flush on
prod). PRODUCTION_CUTOVER.md change log updated.
App side:
- Per-route CSP: /staff/report now sets frame-ancestors 'self'
<CIVI_BASE_URL origin> and drops X-Frame-Options so the CiviCRM
extension can iframe it. All other routes keep frame-ancestors
'none' + X-Frame-Options: DENY via a path-negation source.
- Staff page recognises ?frame=1 and renders without SiteHeader/
SiteFooter so it fills the iframe cleanly.
- StaffReportView posts its scrollHeight to the parent window via
postMessage when framed; the Civi tab listens and auto-resizes
the iframe (no nested scrollbar). Anchor strip drops its sticky
positioning in frame mode since there's no internal scroll.
CiviCRM extension (civi-extension/webform-mw/, key webform-mw):
- info.xml + main hook file (webform_mw.php) implementing
hook_civicrm_tabset to add an 'Engagement Report' tab to
Organization contact-view pages.
- CRM/WebformMw/Page/Tab.php + Smarty template render an iframe
pointing at <WEBFORM_MW_APP_URL>/staff/report?org=<cid>&key=&frame=1,
with a postMessage listener that validates event.origin against
the configured app URL before resizing.
- Config via PHP constants in civicrm.settings.php (WEBFORM_MW_APP_URL,
WEBFORM_MW_STAFF_KEY) or matching env vars. Help banner shown when
unconfigured.
- README documents install, config, behaviour, security caveats.
Joel Brock