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This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.
Description
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.
Metrics
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OR
*cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:* versions up to (excluding) 3.5.3
*cpe:2.3:a:prometheus:prometheus:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.11.3
New CVE Received from GitHub, Inc.5/04/2026 3:16:04 PM
Action
Type
Old Value
New Value
Added
Description
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.
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
