{"id":"CVE-2026-0528","state":"PUBLISHED","title":"Improper Input Validation in Metricbeat Leading to Denial of Service","description":"Improper Validation of Array Index (CWE-129) exists in Metricbeat can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed payloads sent to the Graphite server metricset or Zookeeper server metricset. Additionally, Improper Input Validation (CWE-20) exists in the Prometheus helper module that can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed metric data.","publishedAt":"2026-01-13T21:02:18.501Z","updatedAt":"2026-01-13T21:25:10.446Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"elastic"},"assigner":"elastic","products":["Elastic Metricbeat"],"affected":[{"vendor":"Elastic","product":"Metricbeat","defaultStatus":"unaffected","versions":[{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.17.29","versionType":"semver"},{"version":"8.0.0","status":"affected","lessThanOrEqual":"8.19.9","versionType":"semver"},{"version":"9.0.0","status":"affected","lessThanOrEqual":"9.1.9","versionType":"semver"},{"version":"9.2.0","status":"affected","lessThanOrEqual":"9.2.3","versionType":"semver"}]}],"references":["https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519"],"weaknesses":["CWE-129"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/0xxx/CVE-2026-0528.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-0528","state":"PUBLISHED","datePublished":"2026-01-13T21:02:18.501Z","dateUpdated":"2026-01-13T21:25:10.446Z","assignerShortName":"elastic","assignerOrgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateReserved":"2025-12-19T15:27:18.049Z"},"containers":{"cna":{"title":"Improper Input Validation in Metricbeat Leading to Denial of Service","descriptions":[{"lang":"en","value":"Improper Validation of Array Index (CWE-129) exists in Metricbeat can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed payloads sent to the Graphite server metricset or Zookeeper server metricset. Additionally, Improper Input Validation (CWE-20) exists in the Prometheus helper module that can allow an attacker to cause a Denial of Service through Input Data Manipulation (CAPEC-153) via specially crafted, malformed metric data."}],"affected":[{"vendor":"Elastic","product":"Metricbeat","defaultStatus":"unaffected","versions":[{"version":"7.0.0","status":"affected","lessThanOrEqual":"7.17.29","versionType":"semver"},{"version":"8.0.0","status":"affected","lessThanOrEqual":"8.19.9","versionType":"semver"},{"version":"9.0.0","status":"affected","lessThanOrEqual":"9.1.9","versionType":"semver"},{"version":"9.2.0","status":"affected","lessThanOrEqual":"9.2.3","versionType":"semver"}]}],"references":[{"url":"https://discuss.elastic.co/t/metricbeat-8-19-10-9-1-10-9-2-4-security-update-esa-2026-01/384519"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseSeverity":"MEDIUM","baseScore":6.5,"confidentialityImpact":"NONE","integrityImpact":"NONE","scope":"UNCHANGED","userInteraction":"NONE","privilegesRequired":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-129","description":"CWE-129 Improper Validation of Array Index","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"elastic","orgId":"271b6943-45a9-4f3a-ab4e-976f3fa05b5a","dateUpdated":"2026-01-13T21:02:18.501Z"},"impacts":[{"capecId":"CAPEC-153","descriptions":[{"lang":"en","value":"CAPEC-153 Input Data Manipulation"}]}],"credits":[{"lang":"en","value":"pkill-arjun","type":"reporter"}],"source":{"discovery":"Elastic"},"x_generator":{"engine":"Elastic CVE Publisher 0.0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-13T21:23:21.867774Z","id":"CVE-2026-0528","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-01-13T21:25:10.446Z"}}]}}}