CVE-2025-34300 Sawtooth Software Lighthouse Studio < 9.16.14 Pre-Authentication RCE
Unauthenticated attackers can execute arbitrary commands via template injection in Lighthouse Studio's Perl web application.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34300?
CVE-2025-34300 is a critical code injection vulnerability in Sawtooth Software Lighthouse Studio, published on 16 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-34300?
How do I fix CVE-2025-34300?
No fix has been published for CVE-2025-34300 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-34300 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34300 exists.
Public exploit code: 1 Metasploit module, 1 Nuclei template and 1 proofs of concept on GitHub.
Sources
Also known as GHSA-m8mc-qpg2-g56x.