# CVE-2026-61654: Lightdash: Unauthenticated dbt Cloud webhook with path injection leaks API key

Status: published. Published: 2026-10-29. Updated: 2026-11-03.

Lightdash is an open source business intelligence platform. In affected versions through 0.3213.0, the dbt Cloud webhook `POST /api/v1/projects/{projectUuid}/dbt-cloud/webhook` has no authentication middleware or signature validation. In `packages/backend/src/controllers/projectController.ts`, `testWebhook()` accepts `accountId` and `runId` from a `job.run.completed` request and passes them to `createPreviewWithExplores()` in `packages/backend/src/services/ProjectService/ProjectService.ts`. These unsanitized values are interpolated into the server-side dbt Cloud API URL, which is requested with the victim project's API key in the `Authorization` header. Path traversal through `accountId` changes the requested path on `cloud.getdbt.com` without changing its host, so the credential-bearing request reaches an attacker-influenced path on that fixed host. The advisory claims API-key theft, but the supplied evidence does not establish that the attacker can observe the `Authorization` header. The unauthenticated webhook also allows preview creation. The target must be a `dbt Cloud IDE` project and the attacker must know its `projectUuid`; the UUID is not enumerable but can be discovered in shared or multi-tenant contexts. Version 0.3214.0 fixes identifier path traversal and verifies webhook HMAC signatures only when a secret is configured; without a secret, unsigned webhooks continue to be processed.

## Remediation

- fix: lightdash/lightdash (other): GitHub reports patched versions 0.3219.1. Check the advisory for the affected release branch. (source: GitHub GHSA-r4xc-vwqr-3252) — https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252

## Affected products and versions

- lightdash / lightdash: < 0.3214.0 (affected). Source: CNA: GitHub_M
-  / lightdash/lightdash (lightdash/lightdash): <= 0.3219.0 (affected, GitHub advisory range). Source: GitHub GHSA-r4xc-vwqr-3252

## Severity and prioritization

- CVSS 4.0: 8.3 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: GitHub_M

- CVSS 4.0: 8.3 (high); CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/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; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: 0.38% as of 2026-11-03; percentile 32.07%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-89

## Exploit evidence

- exploit: https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (ADP: CISA-ADP)

## References

- https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/lightdash/lightdash/pull/24587 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/lightdash/lightdash/commit/8d1d9bb6804bbea66a7bdf1b9b00092665382f14 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/lightdash/lightdash/releases/tag/0.3214.0 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (ADP: CISA-ADP; exploit)

- https://github.com/lightdash/lightdash/commit/8d1d9bb6804bbea66a7bdf1b9b00092665382f14 (security-advisories@github.com)

- https://github.com/lightdash/lightdash/pull/24587 (security-advisories@github.com)

- https://github.com/lightdash/lightdash/releases/tag/0.3214.0 (security-advisories@github.com)

- https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (security-advisories@github.com)

- https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (134c704f-9b21-4f2e-91b3-4a467353bcc0)

- https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252 (GitHub Security Advisories; advisory)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-61654; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-61654; retrieved 2026-11-03; source updated 2026-11-03

- GitHub Security Advisories: https://github.com/lightdash/lightdash/security/advisories/GHSA-r4xc-vwqr-3252; retrieved 2026-11-04; source updated 2026-08-12

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-61654; retrieved 2026-11-03; source updated Not reported

Revision: 8e5833007fbd98dd5eefb16aefebe9e14aa97c67a94961c76543a8ee937abf72

Canonical: https://y2.dev/cve/CVE-2026-61654

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