Vulnerability · Published Mar 5, 2026 · Assigned by VulnCheck

CVE-2026-28454OpenClaw < 2026.2.2 - Authorization Bypass via Unauthenticated Telegram Webhook

High 7.5

In plain English

A high-severity insufficient verification of data authenticity in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.3%top 77.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.2.1	GHSA-fhvm-j76f-qmjv

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.2.2

Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-fhvm-j76f-qmjv) vendor-advisory
Patch Commit patch
Hardening Commit #1 patch
Hardening Commit #2 patch
Hardening Commit #3 patch
VulnCheck Advisory: OpenClaw < 2026.2.2 - Authorization Bypass via Unauthenticated Telegram Webhook third-party-advisory