Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningUpgrade faye
to version 1.0.4, 1.1.3, 1.2.5 or higher.
faye is a simple pub/sub messaging for the web.
Affected versions of this package are vulnerable to Improper Access Control. The Server parses channels in a way that means any channel namespaced under /meta/subscribe
will also work as a subscription request. For example if the client sends a message to the channel /meta/subscribe/x
, that will bypass most authentication extensions but will still be interpreted by the server as a subscription request, and the client will be subscribed to the requested channel. The client has thus bypassed the user's access control policy.