CVE-2026-35628

MEDIUM

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

Title source: cna
STIX 2.1

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)

Core 3
Core References
Third Party Advisory third-party-advisory
GitHub Security Advisory (GHSA-vcx4-4qxg-mfp4)
https://github.com/openclaw/openclaw/security/advisories/GHSA-vcx4-4qxg-mfp4
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.25 - Brute-Force Attack via Missing Telegram Webhook Rate Limiting
https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-telegram-webhook-rate-limiting

Scores

CVSS v3 4.8
EPSS 0.0029
EPSS Percentile 20.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

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