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CVE-2026-72846

6.4 · MEDIUM

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…

Published Aug 20, 2026CWE-918EPSS 0.32%

Overview

CVE-2026-72846 is a medium-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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 pac

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/lightdash/lightdashGitHubgithub.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/GoogleChat/GoogleChatClient.tsGitHubgithub.com/lightdash/lightdash/blob/1.146.3/packages/backend/src/clients/MicrosoftTeams/MicrosoftTeamsClient.tsGitHubgithub.com/lightdash/lightdash/issues/24389GitHubgithub.com/lightdash/lightdash/releases/tag/1.146.4Refwww.vulncheck.com/advisories/lightdash-scheduled-delivery-webhook-urls-are-not-validated-allowing-server-side-request-forgeryGitHubgithub.com/lightdash/lightdash/issues/24389

How CyberStrike helps

Frequently asked questions

What is CVE-2026-72846?

CVE-2026-72846 is a medium-severity vulnerability. It was published on August 20, 2026 and has a CVSS 3.1 base score of 6.4 (MEDIUM).

How severe is CVE-2026-72846?

This vulnerability has a CVSS 3.1 base score of 6.4, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-72846?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-72846?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-72846 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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