CVE-2026-35628

MEDIUM

4.8

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.

CVE Details

CVSS v3.1 Score4.8

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionNONE

Published4/9/2026

Last Modified4/15/2026

Sourcenvd

Honeypot Sightings0

Affected Products

openclaw:openclaw

Weaknesses (CWE)

CWE-307

References

https://github.com/openclaw/openclaw/commit/c2c136ae9517ddd0789d742a0fdf4c10e8c729a7(disclosure@vulncheck.com)

https://github.com/openclaw/openclaw/security/advisories/GHSA-vcx4-4qxg-mfp4(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-telegram-webhook-rate-limiting(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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