Vulnerability in Openclaw
CVE-2026-28454
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 30.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-fhvm-j76f-qmjv (vendor-advisory, Mitigation, Vendor Advisory)
- github.com/openclaw/openclaw/commit/ca92597e1f9593236ad86810b66633144b69314d (Patch, patch)
- github.com/openclaw/openclaw/commit/5643a934799dc523ec2ef18c007e1aa2c386b670 (Patch, patch)
- github.com/openclaw/openclaw/commit/3cbcba10cf30c2ffb898f0d8c7dfb929f15f8930 (Patch, patch)
- github.com/openclaw/openclaw/commit/633fe8b9c17f02fcc68ecdb5ec212a5ace932f09 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-authorization-bypass-via-unauthenticated-… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28454?
- CVE-2026-28454 is a high-severity vulnerability in Openclaw, classified under Insufficient Verification of Data Authenticity. CVSS score: 7.5/10. Published 2026-03-05.
- How severe is CVE-2026-28454?
- High severity. CVSS v3 base score is 7.5 out of 10.