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Vulnerability Details :

CVE-2026-32896

Summary
Assigner-VulnCheck
Assigner Org ID-83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At-21 Mar, 2026 | 00:42
Updated At-26 May, 2026 | 11:52
Rejected At-
Credits

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

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:VulnCheck
Assigner Org ID:83251b91-4cc7-4094-a5c7-464a1b83ea10
Published At:21 Mar, 2026 | 00:42
Updated At:26 May, 2026 | 11:52
Rejected At:
▼CVE Numbering Authority (CNA)
OpenClaw < 2026.2.21 - Unauthenticated Webhook Access via Passwordless Fallback in BlueBubbles Plugin

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.

Affected Products
Vendor
OpenClawOpenClaw
Product
OpenClaw
Default Status
unaffected
Versions
Affected
  • From 0 before 2026.2.21 (semver)
Unaffected
  • 2026.2.21 (semver)
Problem Types
TypeCWE IDDescription
CWECWE-306CWE-306 Missing Authentication for Critical Function
Type: CWE
CWE ID: CWE-306
Description: CWE-306 Missing Authentication for Critical Function
Metrics
VersionBase scoreBase severityVector
4.06.3MEDIUM
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
3.14.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Version: 4.0
Base score: 6.3
Base severity: MEDIUM
Vector:
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
Version: 3.1
Base score: 4.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
reporter
Peng Zhou (@zpbrent)
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm
third-party-advisory
https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590
patch
https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806
patch
https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin
third-party-advisory
Hyperlink: https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm
Resource:
third-party-advisory
Hyperlink: https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590
Resource:
patch
Hyperlink: https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806
Resource:
patch
Hyperlink: https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin
Resource:
third-party-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:disclosure@vulncheck.com
Published At:21 Mar, 2026 | 01:17
Updated At:26 May, 2026 | 14:16

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.06.3MEDIUM
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/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:X
Secondary3.14.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Primary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Type: Secondary
Version: 4.0
Base score: 6.3
Base severity: MEDIUM
Vector:
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/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:X
Type: Secondary
Version: 3.1
Base score: 4.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 6.5
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CPE Matches
OpenClaw
openclaw
>>openclaw>>Versions before 2026.2.21(exclusive)
cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*
Weaknesses
CWE IDTypeSource
CWE-306Secondarydisclosure@vulncheck.com
CWE ID: CWE-306
Type: Secondary
Source: disclosure@vulncheck.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806disclosure@vulncheck.com
Patch
https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590disclosure@vulncheck.com
Patch
https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rmdisclosure@vulncheck.com
Vendor Advisory
https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugindisclosure@vulncheck.com
Third Party Advisory
Hyperlink: https://github.com/openclaw/openclaw/commit/283029bdea23164ab7482b320cb420d1b90df806
Source: disclosure@vulncheck.com
Resource:
Patch
Hyperlink: https://github.com/openclaw/openclaw/commit/6b2f2811dc623e5faaf2f76afaa9279637174590
Source: disclosure@vulncheck.com
Resource:
Patch
Hyperlink: https://github.com/openclaw/openclaw/security/advisories/GHSA-5mx2-2mgw-x8rm
Source: disclosure@vulncheck.com
Resource:
Vendor Advisory
Hyperlink: https://www.vulncheck.com/advisories/openclaw-unauthenticated-webhook-access-via-passwordless-fallback-in-bluebubbles-plugin
Source: disclosure@vulncheck.com
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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