What is CVE-2026-35618?

CVE-2026-35618 is a medium-severity vulnerability in Openclaw, classified under Authentication Bypass by Capture-replay. CVSS score: 6.5/10. Published 2026-04-09.

How severe is CVE-2026-35618?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Openclaw

CVE-2026-35618

OpenClaw before 2026.3.23 contains a replay identity vulnerability in Plivo V2 signature verification that allows attackers to bypass replay protection by modifying query parameters. The verification path derives replay keys from the full…

EPSS: 0.000 (13.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N.

Affected products

Openclaw — versions 0, 2026.3.23

Weakness classification (CWE)

CWE-294 — Authentication Bypass by Capture-replay

References

GitHub Security Advisory (GHSA-cg6c-q2hx-69h7) (third-party-advisory)
Patch Commit #1 (patch)
Patch Commit #2 (patch)
VulnCheck Advisory: OpenClaw < 2026.3.23 - Replay Identity Drift via Query-Only Variants in Plivo V2 Verification (third-party-advisory)

Frequently asked questions

What is CVE-2026-35618?: CVE-2026-35618 is a medium-severity vulnerability in Openclaw, classified under Authentication Bypass by Capture-replay. CVSS score: 6.5/10. Published 2026-04-09.
How severe is CVE-2026-35618?: Medium severity. CVSS v3 base score is 6.5 out of 10.