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.

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.

EPSS: 0.003 (17.1th percentile) — read the EPSS interpretation.

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.

Affected products

Openclaw — versions 0

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

disclosure@vulncheck.com (vendor-advisory, Mitigation, Vendor Advisory)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (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.