CVE-2026-72846 (GCVE-0-2026-72846)
Vulnerability from cvelistv5 – Published: 2026-08-20 21:57 – Updated: 2026-10-08 15:51
VLAI
EPSS
VEX
Title
Lightdash Scheduled Delivery Webhook URLs Are Not Validated, Allowing Server-Side Request Forgery
Summary
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.
Severity
6.4 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 15:38 UTC
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/lightdash/lightdash/issues/24389 | issue-tracking |
| https://github.com/lightdash/lightdash/blob/1.146… | technical-description |
| https://github.com/lightdash/lightdash/blob/1.146… | technical-description |
| https://github.com/lightdash/lightdash/releases/t… | release-notes |
| https://github.com/lightdash/lightdash | product |
| https://www.vulncheck.com/advisories/lightdash-sc… | third-party-advisory |
Impacted products
Date Public
2026-06-17 00:00
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