CVE-2024-28867

Swift Prometheus is a Swift client for the Prometheus monitoring system, supporting counters, gauges and histograms. In code which applies un-sanitized string values into metric names or labels, an attacker could make use of this and send a ?lang query parameter containing newlines, } or similar characters which can lead to the attacker taking over the exported format – including creating unbounded numbers of stored metrics, inflating server memory usage, or causing “bogus” metrics. This vulnerability is fixed in2.0.0-alpha.2.