CVE-2026-32896

mediumpriority · track · 26OT risk · elevatedEPSS 0.003 · 17 %ileDEEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.25% (17th) EPSS
CVSS 6.5 · medium
Is it mine?
5 products
Check your exposure
Who says so?
5 sources
cnnvd · enisa_euvd · cert_bund · nvd

EPSS · scored 2026-10-27

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.

01

cvss

Technical severity, 0–10. One row per scoring source.

6.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.7–6.5

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 2.5
v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · disclosure@vulncheck.comexploitability 2.2 · impact 2.5
v3.14.8mediumCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:Nsecondary · OSV
v4.06.3mediumCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:Nsecondary · ENISA EU
v4.06.3mediumCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · disclosure@vulncheck.com
v4.01.7lowCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:Xsecondary · CVSS-BT (t0sche)
02

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS
03

weaknesses

The CWE weakness classes this flaw belongs to.

04

affected products (5)

Products and version ranges known to be affected.

05

advisories (2)

Vendor and ecosystem advisories describing this.

  • WID-SEC-W-2026-0472OpenClaw: Mehrere SchwachstellenDeutsch2026-02-22csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um beliebigen Programmcode auszuführen, sich erhöhte Berechtigungen zu verschaffen, Daten zu manipulieren, einen Denial-of-Service-Zustand auszulösen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen oder andere nicht näher spezifizierte Angriffe durchzuführen.

  • GHSA-5mx2-2mgw-x8rmOpenClaw: BlueBubbles beta plugin webhook auth hardening (remove passwordless fallback)2026-03-03ghsa · osvUS

    ### Summary BlueBubbles webhook auth in the optional beta iMessage plugin allowed a passwordless fallback path. In some reverse-proxy/local routing setups, this could allow unauthenticated webhook events. ### Affected Component and Scope - Component: `extensions/bluebubbles` webhook handler - Scope: only deployments using the optional BlueBubbles plugin where webhook password auth was not configured for incoming webhook events ### Affected Packages / Versions - Package: `openclaw/openclaw` (npm) - Latest published npm version at triage time (2026-02-21): `2026.2.19-2` - Affected structured range: `<=2026.2.19-2` - Fixed on `main`; planned patched release: `2026.2.21` (`>=2026.2.21`) ### Details The vulnerable implementation had multiple auth branches, including a passwordless fallback with loopback/proxy heuristics. The fix now uses one authentication codepath: - inbound webhook token/guid must match `channels.bluebubbles.password` - webhook target matching is consolidated to shared plugin-sdk logic - BlueBubbles config validation now requires `password` when `serverUrl` is set ### Impact BlueBubbles is an optional beta iMessage plugin, and onboarding/channel-add flows already require a password. Practical exposure is mainly custom/manual configurations that omitted webhook password authentication. ### Remediation - Upgrade to a release that includes this patch (`>=2026.2.21`, planned). - Ensure BlueBubbles webhook delivery includes a matching password (`?password=<password>` or `x-password`). ### Fix Commit(s) - `6b2f2811dc623e5faaf2f76afaa9279637174590` - `283029bdea23164ab7482b320cb420d1b90df806` ### Release Process Note `patched_versions` is pre-set to the planned next release (`2026.2.21`) so once npm release is out, advisory publish can proceed without additional ticket edits. OpenClaw thanks @zpbrent for reporting.

06

also known as (4)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

published 2026-03-21modified 2026-06-17
08

references (13)

External citations — patches, advisories, analysis.

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