CVE-2026-28480
Received Received - Intake

Authorization Bypass in OpenClaw Telegram Allowlist via Username Spoofing

Publication date: 2026-03-05

Last updated on: 2026-03-17

Assigner: VulnCheck

Description
OpenClaw versions prior to 2026.2.14 contain an authorization bypass vulnerability where Telegram allowlist matching accepts mutable usernames instead of immutable numeric sender IDs. Attackers can spoof identity by obtaining recycled usernames to bypass allowlist restrictions and interact with bots as unauthorized senders.

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Meta Information

Published
2026-03-05
Last Modified
2026-03-17
Generated
2026-07-06
AI Q&A
2026-03-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-28480
EUVD
EUVD-2026-9926

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
openclaw openclaw to 2026.2.14 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-290 This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

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Executive Summary

This vulnerability exists in OpenClaw versions prior to 2026.2.14 and involves an authorization bypass. The issue arises because the Telegram allowlist matching process accepts mutable usernames instead of immutable numeric sender IDs. As a result, attackers can spoof their identity by obtaining recycled usernames, allowing them to bypass allowlist restrictions and interact with bots as unauthorized senders.

Impact Analysis

The vulnerability can allow attackers to impersonate authorized users by exploiting recycled usernames. This means unauthorized individuals could bypass security controls and interact with bots as if they were legitimate senders, potentially leading to unauthorized access, manipulation of bot interactions, or other malicious activities.

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