prompts.chat prior to commit 30a8f04 contains a server-side request forgery vulnerability in Fal.ai media status polling that allows authenticated users to perform arbitrary outbound requests by supplying attacker-controlled URLs in the token parameter. Attackers can exploit the lack of URL validation to disclose the FAL_API_KEY in the Authorization header, enabling credential theft, internal network probing, and abuse of the victim's Fal.ai account.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://gist.github.com/mdisec/27c0cac0ec6a8f3c8f85a18987ddb942
disclosure@vulncheck.com
https://github.com/f/prompts.chat/commit/30a8f0470e0ba45e6be9c9f55220f4a9a6b91c…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/prompts-chat-ssrf-via-fal-ai-media-status-…
disclosure@vulncheck.com