CVE-2026-28454highCWE-345

CVE-2026-28454: high-severity vulnerability in OpenClaw

OpenClaw < 2026.2.2 - Authorization Bypass via Unauthenticated Telegram Webhook

Published · Updated

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.2epss 0.4%
exploitation probability
0.4%top 67% of all CVEs
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
OpenClaw · OpenClaw
Related CVEs — OpenClaw

In the same product, most dangerous first.

CVE-2026-25253HIGHCVE-2026-25253EPSS 24.4%CVE-2026-32917CRITICALOpenClaw < 2026.3.13 - Remote Command Injection via Unsanitized iMessage Attachment Paths in SCPEPSS 3.2%CVE-2026-53822HIGHOpenClaw < 2026.5.18 - Command Argument Modification via Shell Wrapper Between Approval and ExecutionEPSS 2.0%CVE-2026-32052MEDIUMOpenClaw < 2026.2.24 - Hidden Command Execution via Shell-Wrapper Positional argv CarriersEPSS 1.6%CVE-2026-44998LOWOpenClaw < 2026.4.20 - Tool Policy Bypass via Bundled MCP/LSP ToolsEPSS 1.2%CVE-2026-44109CRITICALOpenClaw < 2026.4.15 - Authentication Bypass in Feishu Webhook and Card-Action ValidationEPSS 1.1%
References
https://github.com/openclaw/openclaw/commit/3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930https://github.com/openclaw/openclaw/commit/5643a934799dc523ec2ef18c007e1aa2c386b670https://github.com/openclaw/openclaw/commit/633fe8b9c17f02fcc68ecdb5ec212a5ace932f09https://github.com/openclaw/openclaw/commit/ca92597e1f9593236ad86810b66633144b69314dhttps://github.com/openclaw/openclaw/security/advisories/GHSA-fhvm-j76f-qmjvhttps://www.vulncheck.com/advisories/openclaw-authorization-bypass-via-unauthenticated-telegram-webhook