The interim CVE-2026-109618 mitigation lived in the shared hardening.ini,
so every PHP role ran without a memory limit until the last image was
patched, and no role's service_memory_mb share applied.
Registry metadata of the images pinned on main shows that 16 of the 20
consumers already ship PHP 8.2.35, 8.3.36, 8.4.27 or 8.5.12 (or the
Alpine/Debian build of it). Four predate the fix:
markoshust/magento-php:8.4-fpm (8.4.21), ghcr.io/heviat/webmail:2024.06
(the Mailu OIDC flavor, built 2025-04-04), phpldapadmin/phpldapadmin:2.3.11
(built 2026-05-15) and ghcr.io/shopware/docker-base:8.3 (8.3.25).
- Move memory_limit = -1 into its own content-addressed ini
(FILE_PHP_MEMORY_UNLIMITED_INI) and mount it only in magento, mailu,
phpldapadmin and shopware.
- hardening.ini keeps expose_php, session.upload_progress.enabled and
fatal_error_backtraces as permanent hardening.
- Joomla's php-upload.ini loads as conf.d/uploads.ini again: no -1 has
to be outranked anymore.
- The root TODO names the four images that still need the override.
Refs #1126
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Proxy:
- server_tokens off, X-Powered-By stripped from upstream responses,
HSTS max-age raised to one year.
- No global X-Content-Type-Options: under nosniff, ORB (step 3.4)
blocks no-cors cross-origin responses typed text/html, e.g. tracking
beacons answered with an empty 204.
PHP (CVE-2026-109618, CVE-2026-109619):
- New role sys-svc-compose-php installs a shared ini (expose_php Off,
session.upload_progress.enabled 0, fatal_error_backtraces 0 for
PHP 8.5, interim memory_limit -1) and a PHP-FPM [www] drop-in
(pm.max_requests = PHP_FPM_MAX_REQUESTS) once per stack host,
before 04_files renders any compose file.
- The host file names carry a sha1 prefix of the controller-side
source, so a content change alters every PHP app's compose.yml and
recreates it, also on remote deploys where compose_volumes cannot
read the stack host file and hashes the path instead.
- 20 PHP roles mount the ini as a compose/swarm config into their
image's scan dir; moodle, nextcloud and shopware also mount the FPM
drop-in. Magento keeps its own pool: its php-fpm.conf has no
include= and is rendered without notify.
- Joomla's php-upload.ini now loads as zzz-joomla-uploads.ini so its
own memory_limit wins: the media API compares Content-Length with
toBytes(memory_limit) and rejects every upload at -1.
TODOs record the memory_limit revert condition and accepted
trade-offs, Akaunting on PHP 8.1, FusionDirectory on PHP 7.4 and the
public Keycloak admin console.
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5.5