Vulnerability Details CVE-2026-42154
Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-compressed request body before allocating memory. An unauthenticated attacker can send a small payload that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 6.5%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-42154
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cpe:2.3:a:prometheus:prometheus:0.10.0
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cpe:2.3:a:prometheus:prometheus:0.11.0
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cpe:2.3:a:prometheus:prometheus:0.11.1
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cpe:2.3:a:prometheus:prometheus:0.12.0
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cpe:2.3:a:prometheus:prometheus:0.13.0
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cpe:2.3:a:prometheus:prometheus:0.13.1
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cpe:2.3:a:prometheus:prometheus:0.13.2
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cpe:2.3:a:prometheus:prometheus:0.13.3
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cpe:2.3:a:prometheus:prometheus:0.13.4
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cpe:2.3:a:prometheus:prometheus:0.14.0
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cpe:2.3:a:prometheus:prometheus:0.15.0
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cpe:2.3:a:prometheus:prometheus:0.15.1
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cpe:2.3:a:prometheus:prometheus:0.16.0
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cpe:2.3:a:prometheus:prometheus:0.16.1
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cpe:2.3:a:prometheus:prometheus:0.16.2
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cpe:2.3:a:prometheus:prometheus:0.17.0
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cpe:2.3:a:prometheus:prometheus:0.18.0
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cpe:2.3:a:prometheus:prometheus:0.19.0
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cpe:2.3:a:prometheus:prometheus:0.19.1
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cpe:2.3:a:prometheus:prometheus:0.19.2
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cpe:2.3:a:prometheus:prometheus:0.19.3
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cpe:2.3:a:prometheus:prometheus:0.2.0
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cpe:2.3:a:prometheus:prometheus:0.2.1
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cpe:2.3:a:prometheus:prometheus:0.20.0
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cpe:2.3:a:prometheus:prometheus:0.3.0
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cpe:2.3:a:prometheus:prometheus:0.4.0
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cpe:2.3:a:prometheus:prometheus:0.5.0
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cpe:2.3:a:prometheus:prometheus:0.6.0
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cpe:2.3:a:prometheus:prometheus:0.7.0
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cpe:2.3:a:prometheus:prometheus:0.8.0
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cpe:2.3:a:prometheus:prometheus:0.9.0
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cpe:2.3:a:prometheus:prometheus:1.0.0
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cpe:2.3:a:prometheus:prometheus:1.0.1
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cpe:2.3:a:prometheus:prometheus:1.0.2
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cpe:2.3:a:prometheus:prometheus:1.1.0
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cpe:2.3:a:prometheus:prometheus:1.1.1
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cpe:2.3:a:prometheus:prometheus:1.1.2
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cpe:2.3:a:prometheus:prometheus:1.1.3
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cpe:2.3:a:prometheus:prometheus:1.2.0
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cpe:2.3:a:prometheus:prometheus:1.2.1
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cpe:2.3:a:prometheus:prometheus:1.2.2
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cpe:2.3:a:prometheus:prometheus:1.2.3
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cpe:2.3:a:prometheus:prometheus:1.3.0
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cpe:2.3:a:prometheus:prometheus:1.3.1
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cpe:2.3:a:prometheus:prometheus:1.4.0
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cpe:2.3:a:prometheus:prometheus:1.4.1
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cpe:2.3:a:prometheus:prometheus:1.5.0
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cpe:2.3:a:prometheus:prometheus:1.5.1
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cpe:2.3:a:prometheus:prometheus:1.5.2
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cpe:2.3:a:prometheus:prometheus:1.5.3
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cpe:2.3:a:prometheus:prometheus:1.6.0
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cpe:2.3:a:prometheus:prometheus:1.6.1
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cpe:2.3:a:prometheus:prometheus:1.6.2
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cpe:2.3:a:prometheus:prometheus:1.6.3
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cpe:2.3:a:prometheus:prometheus:1.7.0
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cpe:2.3:a:prometheus:prometheus:1.7.1
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cpe:2.3:a:prometheus:prometheus:1.7.2
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cpe:2.3:a:prometheus:prometheus:1.8.0
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cpe:2.3:a:prometheus:prometheus:1.8.1
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cpe:2.3:a:prometheus:prometheus:1.8.2
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cpe:2.3:a:prometheus:prometheus:2.0.0
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cpe:2.3:a:prometheus:prometheus:2.1.0
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cpe:2.3:a:prometheus:prometheus:2.10.0
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cpe:2.3:a:prometheus:prometheus:2.11.0
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cpe:2.3:a:prometheus:prometheus:2.11.1
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cpe:2.3:a:prometheus:prometheus:2.12.0
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cpe:2.3:a:prometheus:prometheus:2.2.0
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cpe:2.3:a:prometheus:prometheus:2.2.1
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cpe:2.3:a:prometheus:prometheus:2.23.0
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cpe:2.3:a:prometheus:prometheus:2.24.0
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cpe:2.3:a:prometheus:prometheus:2.24.1
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cpe:2.3:a:prometheus:prometheus:2.25.0
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cpe:2.3:a:prometheus:prometheus:2.25.1
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cpe:2.3:a:prometheus:prometheus:2.25.2
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cpe:2.3:a:prometheus:prometheus:2.26.0
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cpe:2.3:a:prometheus:prometheus:2.26.1
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cpe:2.3:a:prometheus:prometheus:2.27.0
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cpe:2.3:a:prometheus:prometheus:2.27.1
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cpe:2.3:a:prometheus:prometheus:2.28.0
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cpe:2.3:a:prometheus:prometheus:2.28.1
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cpe:2.3:a:prometheus:prometheus:2.29.0
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cpe:2.3:a:prometheus:prometheus:2.29.1
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cpe:2.3:a:prometheus:prometheus:2.29.2
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cpe:2.3:a:prometheus:prometheus:2.3.0
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cpe:2.3:a:prometheus:prometheus:2.3.1
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cpe:2.3:a:prometheus:prometheus:2.3.2
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cpe:2.3:a:prometheus:prometheus:2.30.0
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cpe:2.3:a:prometheus:prometheus:2.30.1
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cpe:2.3:a:prometheus:prometheus:2.30.2
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cpe:2.3:a:prometheus:prometheus:2.30.3
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cpe:2.3:a:prometheus:prometheus:2.30.4
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cpe:2.3:a:prometheus:prometheus:2.31.0
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cpe:2.3:a:prometheus:prometheus:2.31.1
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cpe:2.3:a:prometheus:prometheus:2.31.2
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cpe:2.3:a:prometheus:prometheus:2.32.0
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cpe:2.3:a:prometheus:prometheus:2.32.1
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cpe:2.3:a:prometheus:prometheus:2.33.0
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cpe:2.3:a:prometheus:prometheus:2.33.1
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cpe:2.3:a:prometheus:prometheus:2.33.2
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cpe:2.3:a:prometheus:prometheus:2.33.3
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cpe:2.3:a:prometheus:prometheus:2.33.4
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cpe:2.3:a:prometheus:prometheus:2.33.5
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cpe:2.3:a:prometheus:prometheus:2.34.0
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cpe:2.3:a:prometheus:prometheus:2.35.0
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cpe:2.3:a:prometheus:prometheus:2.36.0
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cpe:2.3:a:prometheus:prometheus:2.36.1
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cpe:2.3:a:prometheus:prometheus:2.36.2
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cpe:2.3:a:prometheus:prometheus:2.37.0
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cpe:2.3:a:prometheus:prometheus:2.37.1
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cpe:2.3:a:prometheus:prometheus:2.37.2
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cpe:2.3:a:prometheus:prometheus:2.37.3
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cpe:2.3:a:prometheus:prometheus:2.37.4
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cpe:2.3:a:prometheus:prometheus:2.37.5
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cpe:2.3:a:prometheus:prometheus:2.37.6
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cpe:2.3:a:prometheus:prometheus:2.37.7
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cpe:2.3:a:prometheus:prometheus:2.37.8
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cpe:2.3:a:prometheus:prometheus:2.37.9
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cpe:2.3:a:prometheus:prometheus:2.38.0
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cpe:2.3:a:prometheus:prometheus:2.39.0
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cpe:2.3:a:prometheus:prometheus:2.39.1
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cpe:2.3:a:prometheus:prometheus:2.39.2
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cpe:2.3:a:prometheus:prometheus:2.4.0
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cpe:2.3:a:prometheus:prometheus:2.4.1
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cpe:2.3:a:prometheus:prometheus:2.4.2
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cpe:2.3:a:prometheus:prometheus:2.4.3
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cpe:2.3:a:prometheus:prometheus:2.40.0
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cpe:2.3:a:prometheus:prometheus:2.40.1
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cpe:2.3:a:prometheus:prometheus:2.40.2
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cpe:2.3:a:prometheus:prometheus:2.40.3
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cpe:2.3:a:prometheus:prometheus:2.40.4
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cpe:2.3:a:prometheus:prometheus:2.40.5
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cpe:2.3:a:prometheus:prometheus:2.40.6
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cpe:2.3:a:prometheus:prometheus:2.40.7
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cpe:2.3:a:prometheus:prometheus:2.41.0
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cpe:2.3:a:prometheus:prometheus:2.42.0
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cpe:2.3:a:prometheus:prometheus:2.43.0
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cpe:2.3:a:prometheus:prometheus:2.43.1
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cpe:2.3:a:prometheus:prometheus:2.44.0
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cpe:2.3:a:prometheus:prometheus:2.45.0
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cpe:2.3:a:prometheus:prometheus:2.45.1
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cpe:2.3:a:prometheus:prometheus:2.45.2
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cpe:2.3:a:prometheus:prometheus:2.45.3
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cpe:2.3:a:prometheus:prometheus:2.45.4
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cpe:2.3:a:prometheus:prometheus:2.45.5
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cpe:2.3:a:prometheus:prometheus:2.45.6
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cpe:2.3:a:prometheus:prometheus:2.46.0
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cpe:2.3:a:prometheus:prometheus:2.47.0
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cpe:2.3:a:prometheus:prometheus:2.47.1
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cpe:2.3:a:prometheus:prometheus:2.47.2
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cpe:2.3:a:prometheus:prometheus:2.48.0
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cpe:2.3:a:prometheus:prometheus:2.48.1
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cpe:2.3:a:prometheus:prometheus:2.49.0
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cpe:2.3:a:prometheus:prometheus:2.49.1
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cpe:2.3:a:prometheus:prometheus:2.5.0
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cpe:2.3:a:prometheus:prometheus:2.50.0
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cpe:2.3:a:prometheus:prometheus:2.50.1
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cpe:2.3:a:prometheus:prometheus:2.51.0
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cpe:2.3:a:prometheus:prometheus:2.51.1
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cpe:2.3:a:prometheus:prometheus:2.51.2
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cpe:2.3:a:prometheus:prometheus:2.52.0
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cpe:2.3:a:prometheus:prometheus:2.53.0
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cpe:2.3:a:prometheus:prometheus:2.53.1
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cpe:2.3:a:prometheus:prometheus:2.53.2
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cpe:2.3:a:prometheus:prometheus:2.53.3
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cpe:2.3:a:prometheus:prometheus:2.53.4
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cpe:2.3:a:prometheus:prometheus:2.53.5
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cpe:2.3:a:prometheus:prometheus:2.54.0
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cpe:2.3:a:prometheus:prometheus:2.54.1
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cpe:2.3:a:prometheus:prometheus:2.55.0
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cpe:2.3:a:prometheus:prometheus:2.55.1
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cpe:2.3:a:prometheus:prometheus:2.6.0
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cpe:2.3:a:prometheus:prometheus:2.6.1
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cpe:2.3:a:prometheus:prometheus:2.7.0
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cpe:2.3:a:prometheus:prometheus:2.7.1
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cpe:2.3:a:prometheus:prometheus:2.7.2
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cpe:2.3:a:prometheus:prometheus:2.8.0
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cpe:2.3:a:prometheus:prometheus:2.8.1
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cpe:2.3:a:prometheus:prometheus:2.9.0
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cpe:2.3:a:prometheus:prometheus:2.9.1
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cpe:2.3:a:prometheus:prometheus:2.9.2
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cpe:2.3:a:prometheus:prometheus:3.0.0
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cpe:2.3:a:prometheus:prometheus:3.0.1
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cpe:2.3:a:prometheus:prometheus:3.1.0
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cpe:2.3:a:prometheus:prometheus:3.10.0
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cpe:2.3:a:prometheus:prometheus:3.11.0
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cpe:2.3:a:prometheus:prometheus:3.11.1
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cpe:2.3:a:prometheus:prometheus:3.11.2
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cpe:2.3:a:prometheus:prometheus:3.2.0
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cpe:2.3:a:prometheus:prometheus:3.2.1
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cpe:2.3:a:prometheus:prometheus:3.3.0
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cpe:2.3:a:prometheus:prometheus:3.3.1
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cpe:2.3:a:prometheus:prometheus:3.4.0
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cpe:2.3:a:prometheus:prometheus:3.4.1
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cpe:2.3:a:prometheus:prometheus:3.4.2
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cpe:2.3:a:prometheus:prometheus:3.5.0
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cpe:2.3:a:prometheus:prometheus:3.5.1
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cpe:2.3:a:prometheus:prometheus:3.5.2
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cpe:2.3:a:prometheus:prometheus:3.6.0
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cpe:2.3:a:prometheus:prometheus:3.7.0
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cpe:2.3:a:prometheus:prometheus:3.7.1
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cpe:2.3:a:prometheus:prometheus:3.7.2
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cpe:2.3:a:prometheus:prometheus:3.7.3
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cpe:2.3:a:prometheus:prometheus:3.8.0
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cpe:2.3:a:prometheus:prometheus:3.8.1
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cpe:2.3:a:prometheus:prometheus:3.9.0
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cpe:2.3:a:prometheus:prometheus:3.9.1