CVE-2026-49858

API Platform Core contains a cross-user attribute leak in JSON:API and HAL item normalizers due to a missing isCacheKeySafe gate. Affected versions: 2.6.0 up to 4.1.28, 4.2.25, and 4.3.11 (i.e., before 4.1.29, 4.2.26, 4.3.12). Root cause: componentsCache arrays are keyed on $context['cache_key'] ...