🚨 CVE-2026-21861: CRITICAL OS command injection in baserCMS < 5.2.3. Admins can execute arbitrary system commands via core update. Patch to 5.2.3+ ASAP to prevent full compromise. https://radar.offseq.com/threat/cve-2026-21861-cwe-78-improper-neutralization-of-s-7b86deef #OffSeq #baserCMS #CVE2026_21861 #infosec #patching