What’s Vulnerable › Vulnerabilities

CVE-2024-28867: Swift Prometheus un-sanitized metric name or labels can be used to take over exported metrics

• Severity: high (CVSS 7.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-03-29 · updated 2026-06-17
• Weakness: CWE-74

Description

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.

Affected products

• swift-server swift-prometheus: 2.0.0-alpha1

References

• https://github.com/swift-server/swift-prometheus/commit/bfcd4bbfabe11aae4b035424ee9724582e288501
• https://github.com/swift-server/swift-prometheus/security/advisories/GHSA-x768-cvr2-345r
• https://github.com/swift-server/swift-prometheus/commit/bfcd4bbfabe11aae4b035424ee9724582e288501
• https://github.com/swift-server/swift-prometheus/security/advisories/GHSA-x768-cvr2-345r

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