CVE-2026-28454: Openclaw

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

OpenClaw versions prior to 2026.2.2 fail to validate webhook secrets in Telegram webhook mode (must be enabled), allowing unauthenticated HTTP POST requests to the webhook endpoint that trust attacker-controlled JSON payloads. Remote attackers can forge Telegram updates by spoofing message.from.id and chat.id fields to bypass sender allowlists and execute privileged bot commands.

Affected products

• Openclaw Openclaw: before 2026.2.2 (fixed in 2026.2.2)

Published 2026-03-05. Last modified 2026-06-17.