[MEDIUM] API Platform Core vulnerable to cross-user attribute leak in JSON:API and HAL item normalizers due to missing isCacheKeySafe gate

PKSA-9wr7-4vnk-wwmr CVE-2026-49858 GHSA-pjhx-3c3w-9v23

Affected version: >=4.3.0,<4.3.8|>=4.2.0,<4.2.25|>=4.0.0,<4.1.29

Reported by:
GitHub