{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-42154","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-24T17:15:21.835Z","datePublished":"2026-05-04T18:13:12.340Z","dateUpdated":"2026-05-04T20:19:13.876Z"},"containers":{"cna":{"title":"Prometheus: remote read endpoint allows denial of service via crafted snappy payload","problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-789","lang":"en","description":"CWE-789: Memory Allocation with Excessive Size Value","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm","tags":["x_refsource_CONFIRM"],"url":"https://github.com/prometheus/prometheus/security/advisories/GHSA-8rm2-7qqf-34qm"},{"name":"https://github.com/prometheus/prometheus/pull/18584","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/pull/18584"},{"name":"https://github.com/prometheus/prometheus/pull/18585","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/pull/18585"},{"name":"https://github.com/prometheus/prometheus/releases/tag/v3.11.3","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/releases/tag/v3.11.3"},{"name":"https://github.com/prometheus/prometheus/releases/tag/v3.5.3","tags":["x_refsource_MISC"],"url":"https://github.com/prometheus/prometheus/releases/tag/v3.5.3"}],"affected":[{"vendor":"prometheus","product":"prometheus","versions":[{"version":"< 3.5.3","status":"affected"},{"version":">= 3.6.0, < 3.11.3","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-04T18:13:12.340Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-8rm2-7qqf-34qm","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-04T20:18:48.754025Z","id":"CVE-2026-42154","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-04T20:19:13.876Z"}}]}}