{"id":"CVE-2026-23934","details":"An authenticated user is able to cause disproportionate CPU load on the Frontend webserver by sending specifically crafted requests to the Frontend validate.api.exists action, leading to potential denial of service.","modified":"2026-09-25T08:11:21.773592Z","published":"2026-08-18T13:17:21.717Z","references":[{"type":"ADVISORY","url":"https://support.zabbix.com/browse/ZBX-28072"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/zabbix/zabbix","events":[{"introduced":"372a4e93c48ecd25aa666949a055a02369031861"},{"fixed":"63588e12eb23a212c837dbbacb005949673b353a"}],"database_specific":{"extracted_events":[{"introduced":"7.4.0"},{"fixed":"7.4.12"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*"}}],"versions":["7.4.12rc1","7.4.11","7.4.11rc2","7.4.11rc1","7.4.10","7.4.10rc1","7.4.9","7.4.9rc1","7.4.8","7.4.8rc3","7.4.8rc2","7.4.8rc1","7.4.7","7.4.7rc3","7.4.7rc2","7.4.7rc1","7.4.6","7.4.6rc2","7.4.6rc1","7.4.5","7.4.4","7.4.4rc1","7.4.3","7.4.3rc1","7.4.2","7.4.2rc2","7.4.2rc1","7.4.1","7.4.1rc1","7.4.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23934.json","vanir_signatures_modified":"2026-09-25T08:11:21Z","vanir_signatures":[{"deprecated":false,"digest":{"line_hashes":["162185643356969056099637373121662685754","301884150383061037293106834306734767993","63167804984895644221201641958791481105","38852671883870847759498189347652476358","282755891262507678007721094843042318317","41809926521244952597844054970073719247"],"threshold":0.9},"id":"CVE-2026-23934-bd62128e","signature_type":"Line","signature_version":"v1","source":"https://github.com/zabbix/zabbix/commit/63588e12eb23a212c837dbbacb005949673b353a","target":{"file":"src/zabbix_java/src/com/zabbix/gateway/GeneralInformation.java"}}]}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}