CVE-2026-35628

MEDIUM

OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting

Title source: cna

Description

OpenClaw before 2026.3.25 contains a missing rate limiting vulnerability in Telegram webhook authentication that allows attackers to brute-force weak webhook secrets. The vulnerability enables repeated authentication guesses without throttling, permitting attackers to systematically guess webhook secrets through brute-force attacks.

References (3)

[Third Party Advisory] https://github.com/openclaw/openclaw/security/advisories/GHSA-vcx4-4qxg-mfp4

[Patch] https://github.com/openclaw/openclaw/commit/c2c136ae9517ddd0789d742a0fdf4c10e8c729a7

View Patch ZIP pw:eip

[Third Party Advisory] https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-telegram-webhook-rate-limiting

Scores

CVSS v3 4.8

EPSS 0.0005

EPSS Percentile 15.4%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

Details

CWE

CWE-307

Status published

Products (4)

npm/openclaw 0npm

OpenClaw/OpenClaw < 2026.3.25

openclaw/openclaw < 2026.3.25

OpenClaw/OpenClaw 2026.3.25

Published Apr 09, 2026

Tracked Since Apr 10, 2026