CVE-2026-28454
Received Received - Intake

Authentication Bypass in OpenClaw Telegram Webhook Enables Command Injection

Publication date: 2026-03-05

Last updated on: 2026-03-09

Assigner: VulnCheck

Description
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.

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Meta Information

Published
2026-03-05
Last Modified
2026-03-09
Generated
2026-07-06
AI Q&A
2026-03-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-28454
EUVD
EUVD-2026-9903

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.2.2 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-345 The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.

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Executive Summary

This vulnerability affects OpenClaw versions prior to 2026.2.2 when Telegram webhook mode is enabled. The software fails to validate webhook secrets, allowing unauthenticated HTTP POST requests to the webhook endpoint. Attackers can send malicious JSON payloads that spoof the message.from.id and chat.id fields, bypassing sender allowlists and enabling execution of privileged bot commands.

Impact Analysis

The vulnerability allows remote attackers to impersonate trusted Telegram users by spoofing critical identifiers in webhook messages. This can lead to unauthorized execution of privileged commands on the bot, potentially compromising the bot's functionality, data integrity, and security.

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