CVE-2026-32896

OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin

State: Published
Severity: 6.3 Medium
Published: Mar 21, 2026
Updated: Sep 17, 2026
Reserved: Mar 16, 2026

Description

The BlueBubbles webhook handler in OpenClaw versions prior to 2026.2.21 contains a passwordless fallback authentication path that allows unauthenticated webhook events in certain reverse-proxy or local routing configurations. Attackers can bypass webhook authentication by exploiting the loopback/proxy heuristics to send unauthenticated webhook events to the BlueBubbles plugin.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N	VulnCheck
3.1	4.8 Medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N	VulnCheck

Weaknesses

CWE-306 Missing Authentication for Critical Function

Affected Products

Product	Versions
OpenClawOpenClaw	before 2026.2.21Affected 2026.2.21Not affected

References

GitHub Security Advisory (GHSA-5mx2-2mgw-x8rm)vendor-advisory
Patch Commit #1patch
Patch Commit #2patch
VulnCheck Advisory: OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Pluginthird-party-advisory

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