CVE-2026-32896CWE-306

CVE-2026-32896

Medium · published March 21, 2026

CVSS v3.1
4.8
EPSS
0%
Percentile
37.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00446 · 37.8th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-03-21T05:17Z
Affected products (1)
ProductVersionsFixed in
openclaw/openclaw< 2026.2.212026.2.21
References (4)
https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806 · [email protected]https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590 · [email protected]https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm · [email protected]https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin · [email protected]
EPSS history
Timeline
  • 21 MAR 00:42Z
    OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin
    cvelistv5