{"id":"CVE-2026-26934","aliases":["BIT-elk-2026-26934","BIT-kibana-2026-26934","EUVD-2026-8863","GHSA-vvxg-3v44-fpqx"],"status":"published","title":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00315,"percentile":0.24808,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1284"],"published":"2026-02-26T17:03:17Z","modified":"2026-10-28T10:51:24Z","fixes":[{"ecosystem":"Bitnami","package":"elk","fixed_in":["8.19.12","9.2.6","9.3.1"],"sources":["osv"]},{"ecosystem":"Bitnami","package":"kibana","fixed_in":["8.19.12","9.2.6","9.3.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"elk","ranges":[{"type":"SEMVER","events":[{"introduced":"8.18.0"},{"fixed":"8.19.12"},{"introduced":"9.0.0"},{"fixed":"9.2.6"},{"introduced":"9.3.0"},{"fixed":"9.3.1"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"kibana","ranges":[{"type":"SEMVER","events":[{"introduced":"8.18.0"},{"fixed":"8.19.12"},{"introduced":"9.0.0"},{"fixed":"9.2.6"},{"introduced":"9.3.0"},{"fixed":"9.3.1"}]}]}],"products":[{"vendor":"elastic","product":"kibana"}],"references":[{"url":"https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-12/385248","tags":["Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26934","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-vvxg-3v44-fpqx"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/26xxx/CVE-2026-26934.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-26934","title":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-02-26T17:03:17.242Z","modified":"2026-02-26T18:28:11.925Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-8863","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-02-26T17:03:17Z","modified":"2026-02-26T18:28:11Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T19:48:17.446722Z"}],"ghsa":[{"id":"GHSA-vvxg-3v44-fpqx","title":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an...","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-02-26T18:31:41Z","modified":"2026-02-26T18:31:48Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T15:06:23.326773Z"}],"nvd":[{"id":"CVE-2026-26934","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-02-26T18:23:07.647Z","modified":"2026-06-17T10:26:24.82Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T14:12:07.027269Z"}],"osv":[{"id":"CVE-2026-26934","title":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-02-26T17:03:17.242Z","modified":"2026-10-28T10:51:24.573347645Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-1284"],"updated_at":"2026-11-02T15:44:59.80315Z"},{"id":"BIT-elk-2026-26934","title":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-03-03T08:40:08.176Z","modified":"2026-09-08T08:47:19.260700806Z","updated_at":"2026-11-02T15:28:29.563843Z"},{"id":"BIT-kibana-2026-26934","title":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","description":"Improper Validation of Specified Quantity in Input (CWE-1284) in Kibana can allow an authenticated attacker with view-only privileges to cause a Denial of Service via Input Data Manipulation (CAPEC-153). An attacker can send a specially crafted, malformed payload causing excessive resource consumption and resulting in Kibana becoming unresponsive or crashing.","status":"published","published":"2026-03-03T08:43:24.256Z","modified":"2026-09-08T08:48:07.530351996Z","updated_at":"2026-11-02T15:28:32.162822Z"}]}}