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Vulnerability Details :

CVE-2026-39969

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-22 May, 2026 | 18:43
Updated At-23 May, 2026 | 02:35
Rejected At-
Credits

TypeBot: WhatsApp Webhook Endpoint Missing Signature Verification

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint (POST /v1/workspaces/{workspaceId}/whatsapp/{credentialsId}/webhook) does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both workspaceId and credentialsId as path parameters, which are logged in web server access logs, visible in Meta's webhook configuration dashboard, and potentially shared when configuring integrations. This allows any unauthenticated attacker to send spoofed webhook messages to trigger bot flows, consume API resources, and interact with external services using the workspace owner's credentials. The issue has been fixed in version 3.17.0.

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)
â–¼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:22 May, 2026 | 18:43
Updated At:23 May, 2026 | 02:35
Rejected At:
â–¼CVE Numbering Authority (CNA)
TypeBot: WhatsApp Webhook Endpoint Missing Signature Verification

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint (POST /v1/workspaces/{workspaceId}/whatsapp/{credentialsId}/webhook) does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both workspaceId and credentialsId as path parameters, which are logged in web server access logs, visible in Meta's webhook configuration dashboard, and potentially shared when configuring integrations. This allows any unauthenticated attacker to send spoofed webhook messages to trigger bot flows, consume API resources, and interact with external services using the workspace owner's credentials. The issue has been fixed in version 3.17.0.

Affected Products
Vendor
baptisteArno
Product
typebot.io
Versions
Affected
  • < 3.17.0
Problem Types
TypeCWE IDDescription
CWECWE-287CWE-287: Improper Authentication
CWECWE-345CWE-345: Insufficient Verification of Data Authenticity
Type: CWE
CWE ID: CWE-287
Description: CWE-287: Improper Authentication
Type: CWE
CWE ID: CWE-345
Description: CWE-345: Insufficient Verification of Data Authenticity
Metrics
VersionBase scoreBase severityVector
3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
x_refsource_CONFIRM
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0
x_refsource_MISC
Hyperlink: https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0
Resource:
x_refsource_MISC
â–¼Authorized 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
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
exploit
Hyperlink: https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
Resource:
exploit
Information is not available yet
â–¼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:22 May, 2026 | 19:17
Updated At:23 May, 2026 | 04:16

TypeBot is a chatbot builder tool. In versions 3.16.0 and prior, the WhatsApp Cloud API webhook endpoint (POST /v1/workspaces/{workspaceId}/whatsapp/{credentialsId}/webhook) does not verify the x-hub-signature-256 HMAC signature included by Meta in every webhook delivery. The webhook URL exposes both workspaceId and credentialsId as path parameters, which are logged in web server access logs, visible in Meta's webhook configuration dashboard, and potentially shared when configuring integrations. This allows any unauthenticated attacker to send spoofed webhook messages to trigger bot flows, consume API resources, and interact with external services using the workspace owner's credentials. The issue has been fixed in version 3.17.0.

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
Secondary3.16.5MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Type: Secondary
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

Weaknesses
CWE IDTypeSource
CWE-287Secondarysecurity-advisories@github.com
CWE-345Secondarysecurity-advisories@github.com
CWE ID: CWE-287
Type: Secondary
Source: security-advisories@github.com
CWE ID: CWE-345
Type: Secondary
Source: security-advisories@github.com
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0security-advisories@github.com
N/A
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47fsecurity-advisories@github.com
N/A
https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f134c704f-9b21-4f2e-91b3-4a467353bcc0
N/A
Hyperlink: https://github.com/baptisteArno/typebot.io/releases/tag/v3.17.0
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-8vqp-r5w7-v47f
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource: N/A

Change History

0
Information is not available yet

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