Resource exhaustion in OpenClaw - CVE-2026-32980
Published: April 8, 2026
Vulnerability identifier: #VU125166
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-32980
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OpenClaw
Affected software:
OpenClaw
OpenClaw
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the standalone Telegram webhook listener in src/telegram/webhook.ts when handling POST requests before validating the x-telegram-bot-api-secret-token header. A remote attacker can send specially crafted webhook requests to cause a denial of service.
The server reads and buffers the request body and performs JSON parsing work before rejecting invalid requests.
How to mitigate CVE-2026-32980
Install security update from vendor's website.