CVE-2026-32896: OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin
OpenClaw versions prior to 2026.2.21 BlueBubbles webhook handler 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.
Other sources
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.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OpenClawto a version that resolves this vulnerability.Fixed in 2026.2.21
Event History
Frequently Asked Questions
What is the severity of CVE-2026-32896?
CVE-2026-32896 is classified as a medium severity vulnerability due to its potential for unauthorized access.
How do I fix CVE-2026-32896?
To fix CVE-2026-32896, update the OpenClaw BlueBubbles plugin to version 2026.2.21 or later.
What versions are affected by CVE-2026-32896?
CVE-2026-32896 affects all versions of OpenClaw BlueBubbles plugin prior to 2026.2.21.
What kind of attacks can occur due to CVE-2026-32896?
CVE-2026-32896 allows attackers to exploit unauthenticated webhook access, potentially leading to unauthorized actions.
Is there a workaround for CVE-2026-32896 before applying the fix?
There is no known workaround for CVE-2026-32896, so upgrading to the patched version is recommended.