CVE-2026-72846
Lightdash Scheduled Delivery Webhook URLs Are Not Validated, Allowing Server-Side Request Forgery
Description
Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored URL directly. The validatePublicHttpUrl helper in packages/backend/src/utils/ssrfProtection.ts, used for MCP server URLs, is not applied on either path, and the webhook fields carry no server-side URL constraint. A user able to create or trigger a scheduled delivery can therefore direct the server to issue POST requests to private, loopback and link-local addresses, including cloud metadata endpoints, and can distinguish reachable internal services from unreachable ones through the resulting errors. The upstream response is never returned to the requester; on a failure status its body is written to the server log instead. Version 1.146.4 routes both clients through postSchedulerWebhook from packages/backend/src/utils/schedulerWebhookValidation rather than calling fetch directly.
INFO
Published Date :
Aug. 20, 2026, 10:18 p.m.
Last Modified :
Oct. 26, 2026, 10:10 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 4.0 | MEDIUM | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
Solution
- Validate all webhook URLs server-side.
- Avoid directly fetching user-supplied URLs.
- Update to version 1.146.4 or later.
- Restrict access to internal network resources.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-72846.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-72846 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-72846
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-72846 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-72846 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added Translation Title: lightdash, Description: Lightdash almacena la URL del webhook proporcionada con una entrega programada y posteriormente publica en ella desde sendWebhook en packages/backend/src/clients/GoogleChat/GoogleChatClient.ts y en packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. En las versiones afectadas, ambos llaman a fetch en la URL almacenada directamente. La función auxiliar validatePublicHttpUrl en packages/backend/src/utils/ssrfProtection.ts, utilizada para URLs de servidor MCP, no se aplica en ninguna de las rutas, y los campos del webhook no conllevan ninguna restricción de URL del lado del servidor. Un usuario capaz de crear o activar una entrega programada puede, por lo tanto, dirigir al servidor a emitir solicitudes POST a direcciones privadas, de bucle invertido y de enlace local, incluyendo puntos finales de metadatos en la nube, y puede distinguir los servicios internos accesibles de los inaccesibles a través de los errores resultantes. La respuesta ascendente nunca se devuelve al solicitante; en caso de un estado de fallo, su cuerpo se escribe en el registro del servidor en su lugar. La versión 1.146.4 enruta ambos clientes a través de postSchedulerWebhook desde packages/backend/src/utils/schedulerWebhookValidation en lugar de llamar a fetch directamente. -
CVE Modified by [email protected]
Oct. 08, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/72xxx/CVE-2026-72846.json">CVE-2026-72846</a> Added Reference https://github.com/lightdash/lightdash Added Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/GoogleChat/GoogleChatClient.ts Added Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts Added Reference https://github.com/lightdash/lightdash/issues/24389 Added Reference https://github.com/lightdash/lightdash/releases/tag/1.146.4 Added Reference https://www.vulncheck.com/advisories/lightdash-scheduled-delivery-webhook-urls-are-not-validated-allowing-server-side-request-forgery Removed Reference https://github.com/lightdash/lightdash Removed Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/GoogleChat/GoogleChatClient.ts Removed Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts Removed Reference https://github.com/lightdash/lightdash/issues/24389 Removed Reference https://github.com/lightdash/lightdash/releases/tag/1.146.4 Removed Reference https://www.vulncheck.com/advisories/lightdash-scheduled-delivery-webhook-urls-are-not-validated-allowing-server-side-request-forgery -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 08, 2026
Action Type Old Value New Value Added Reference https://github.com/lightdash/lightdash/issues/24389 Removed Reference https://github.com/lightdash/lightdash/issues/24389 -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Added Reference https://github.com/lightdash/lightdash/issues/24389 Added SSVC {'id': 'CVE-2026-72846', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-21T15:38:39.102270Z'} -
New CVE Received by [email protected]
Aug. 20, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/lightdash/lightdash', 'vendor': 'lightdash', 'product': 'lightdash', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.146.4', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '1.146.4', 'versionType': 'semver'}], 'packageURL': 'pkg:npm/lightdash', 'programFiles': ['packages/backend/src/clients/GoogleChat/GoogleChatClient.ts', 'packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts'], 'defaultStatus': 'unaffected'}] Added Description Lightdash stores the webhook URL supplied with a scheduled delivery and later posts to it from sendWebhook in packages/backend/src/clients/GoogleChat/GoogleChatClient.ts and in packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts. In affected versions both call fetch on the stored URL directly. The validatePublicHttpUrl helper in packages/backend/src/utils/ssrfProtection.ts, used for MCP server URLs, is not applied on either path, and the webhook fields carry no server-side URL constraint. A user able to create or trigger a scheduled delivery can therefore direct the server to issue POST requests to private, loopback and link-local addresses, including cloud metadata endpoints, and can distinguish reachable internal services from unreachable ones through the resulting errors. The upstream response is never returned to the requester; on a failure status its body is written to the server log instead. Version 1.146.4 routes both clients through postSchedulerWebhook from packages/backend/src/utils/schedulerWebhookValidation rather than calling fetch directly. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/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 Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-918 Added Reference https://github.com/lightdash/lightdash Added Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/GoogleChat/GoogleChatClient.ts Added Reference https://github.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.ts Added Reference https://github.com/lightdash/lightdash/issues/24389 Added Reference https://github.com/lightdash/lightdash/releases/tag/1.146.4 Added Reference https://www.vulncheck.com/advisories/lightdash-scheduled-delivery-webhook-urls-are-not-validated-allowing-server-side-request-forgery