{"id":"CVE-2026-72628","summary":"Improper Handling of Highly Compressed Data in Kibana Leading to Denial of Service","details":"Improper Handling of Highly Compressed Data (CWE-409) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding Streams management privileges could supply specially crafted content that expands to a far larger volume of data during processing, exhausting the memory available to Kibana. The Kibana process is terminated by the host and remains unavailable to all users until the service is restarted.","modified":"2026-09-05T08:10:52.925386Z","published":"2026-09-01T19:20:21.367Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"8.19.0"},{"last_affected":"8.19.20"},{"introduced":"9.0.0"},{"last_affected":"9.4.5"},{"introduced":"9.5.0"},{"last_affected":"9.5.1"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"elastic","cwe_ids":["CWE-409"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72628.json"},"references":[{"type":"WEB","url":"https://discuss.elastic.co/t/kibana-8-19-21-9-4-6-9-5-2-security-update-esa-2026-125/390090"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72628.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-72628"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elastic/elasticsearch","events":[{"introduced":"93788a8c2882eb5b606510680fac214cff1c7a22"},{"fixed":"4fe44c255c3d0da06779b921e132cdc555ed9aff"},{"introduced":"112859b85d50de2a7e63f73c8fc70b99eea24291"},{"fixed":"10011cbc74640115d0ffac0cef7c925aec4754f5"},{"introduced":"8d4246a64bc255212407b1b313fe402391299c88"},{"fixed":"b42549c72e6e040825b13e5d8ebf7ff63886b24d"}],"database_specific":{"extracted_events":[{"introduced":"8.19.0"},{"fixed":"8.19.21"},{"introduced":"9.0.0"},{"fixed":"9.4.6"},{"introduced":"9.5.0"},{"fixed":"9.5.2"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:elastic:kibana:*:*:*:*:*:*:*:*"}}],"versions":["v8.19.20","v9.5.1","v9.5.0","v8.19.19","v8.19.18","v8.19.17","v8.19.16","v8.19.15","v8.19.14","v8.19.13","v8.19.12","v8.19.11","v8.19.10","v8.19.9","v8.19.8","v8.19.7","v8.19.6","v8.19.5","v8.19.4","v8.19.3","v8.19.2","v8.19.1","v8.19.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-72628.json","vanir_signatures_modified":"2026-09-05T08:10:52Z","vanir_signatures":[{"id":"CVE-2026-72628-3a7783ac","signature_type":"Line","signature_version":"v1","source":"https://github.com/elastic/elasticsearch/commit/b42549c72e6e040825b13e5d8ebf7ff63886b24d","target":{"file":"server/src/test/java/org/elasticsearch/index/codec/vectors/cluster/AbstractHierarchicalKMeansTestCase.java"},"deprecated":false,"digest":{"threshold":0.9,"line_hashes":["135052021381586703096475745787625846996","165211593863699318769248196974601346783","93283623091379418506488785897504512678","26545141423582351670471289194004966592","163657208054960210006054837373388252834","188328033067523928975545214353316183280","153861657743628462836102004850948745595","282921420759628815169960595602566628382","184573602202713091021972066972167860338","29811076932042013910743558499223285624","329060869068124202993854269015822909644","208674098823385167178952187573268393324","1790912059330226764817107183308278790","250365171868249734159749096023348060987","234287526282356732701761841793171567069","198382026650527638707696153454227455590","22314971617461182915801831963963349651","248670988213692025743293766177521538469","299527711206142555017430246441389624918","314424171940312354540151943636534635821","319894074297006831531250284074733644972","300706329898922335316402366566757043028","170031952266079495757137241821007859830","49997997141269201607740040473519105167","20985465904923486259211109010184634164","242167330276683098608140382844566776966","33950566296750829192802020892327850413","176192876017832838873773101418201333563","284423169205913515477596337728676329506","20850313955169809489168194826791412330","333903305963961335898124161710482880456","271796563581059297781225176288220860800","33208540788650055032930896198457671125","282006514390693352268708910181525894168","169451357934179425439211439538890303504","278107203642233221015714977264129937095","260053361466461183187753394988690923594","165485295842040287002401864914731593811","120069717387387360263135575602180210321"]}},{"target":{"file":"server/src/test/java/org/elasticsearch/index/query/SearchExecutionContextTests.java","function":"testFielddataLookupSometimesLoop"},"deprecated":false,"digest":{"function_hash":"336576695806030868800945061847176163790","length":922},"id":"CVE-2026-72628-591830c4","signature_type":"Function","signature_version":"v1","source":"https://github.com/elastic/elasticsearch/commit/4fe44c255c3d0da06779b921e132cdc555ed9aff"},{"signature_type":"Function","signature_version":"v1","source":"https://github.com/elastic/elasticsearch/commit/4fe44c255c3d0da06779b921e132cdc555ed9aff","target":{"file":"server/src/test/java/org/elasticsearch/index/query/SearchExecutionContextTests.java","function":"collect"},"deprecated":false,"digest":{"length":1732,"function_hash":"326805546120623397314007161934836214716"},"id":"CVE-2026-72628-59457f90"},{"deprecated":false,"digest":{"line_hashes":["22835798154405399894246453021669004141","29171084489851244844220596788322192731","187376134121947755566998850598833240229","106430991013007091138793583297008764703","505704818159496016944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