{"id":"CVE-2026-101618","kind":"vulnerability","aliases":["CVE-2026-101618"],"related":[],"title":"MySQL Server: InnoDB flaw lets a privileged user crash the database","description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB).  Supported versions that are affected are MySQL Server: 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3 and  26.7.0-26.7.1. Easily exploitable vulnerability allows high privileged attacker with network access via multiple protocols to compromise MySQL Server, MySQL Cluster.  Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of MySQL Server, MySQL Cluster. CVSS 3.1 Base Score 4.9 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H).","summary":"A flaw in the InnoDB storage engine of MySQL Server and MySQL Cluster can be triggered over the network by a high-privileged account, causing a hang or repeatable crash. The impact is denial of service only, with no confidentiality or integrity loss stated.","severity":"medium","cvss":4.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database-operators","mysql","mysql-cluster","package"],"not_affected_if":["managed-hosting","unaffected-version"],"how_to_check":"- Run `SELECT @@version;` on each MySQL Server or Cluster node and compare against the affected ranges: 8.0.0-8.0.49 (Cluster only), 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.","fix":"- Upgrade MySQL Server and MySQL Cluster to a release outside the affected ranges, per Oracle's July 2026 Critical Patch Update notes (exact fixed versions: unknown from the sources).","status":"open","published_at":"2026-10-20T22:18:15+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","triaged_at":"2026-10-25T04:32:42+00:00","updated_at":"2026-10-25T04:32:42+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:32:42Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade MySQL Server and MySQL Cluster to a release outside the affected ranges, per Oracle's July 2026 Critical Patch Update notes (exact fixed versions: unknown from the sources).","reach":"network","title":"MySQL Server: InnoDB flaw lets a privileged user crash the database","impact":"low","summary":"A flaw in the InnoDB storage engine of MySQL Server and MySQL Cluster can be triggered over the network by a high-privileged account, causing a hang or repeatable crash. The impact is denial of service only, with no confidentiality or integrity loss stated.","category":"package","nicknames":[],"who_cares":["mysql","mysql-cluster","database-operators"],"confidence":0.7,"needs_auth":"yes","worst_case":"Database server hangs or crashes repeatedly, causing denial of service","analyst_note":"","how_to_check":"- Run `SELECT @@version;` on each MySQL Server or Cluster node and compare against the affected ranges: 8.0.0-8.0.49 (Cluster only), 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.","needs_analyst":false,"not_affected_if":["unaffected-version","managed-hosting"],"who_is_affected":"Teams running MySQL Server 8.4 up to 8.4.12, 9.7 up to 9.7.3, or 26.7 up to 26.7.1, and MySQL Cluster 8.0 up to 8.0.49, 8.4 up to 8.4.12, 9.7 up to 9.7.3, or 26.7 up to 26.7.1. Exposure depends on who holds high-privilege database accounts and whether the server is reachable from networks those users can reach. Deployments on versions outside these ranges can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.00069,"input_tokens":3579,"output_tokens":665,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101618':14A,17A '-2026':13A,16A '/av':164C '26.7.0':96C,107C '26.7.1':97C,108C '3.1':154C,163C '4.9':157C '8.0.0':100C '8.0.49':101C '8.4.0':92C,102C '8.4.12':93C,103C '9.7.0':94C,104C '9.7.3':95C,105C 'abil':137C 'access':118C 'account':50B 'affect':88C 'allow':112C 'attack':115C,129C 'avail':158C 'base':155C 'caus':51B,139C 'cluster':24B,38B,77C,99C,127C,152C 'complet':146C 'compon':82C 'compromis':123C 'confidenti':66B 'crash':9A,56B,145C 'cve':12A,15A 'cvss':153C,160C,162C 'databas':11A,19B 'database-oper':18B 'denial':60B 'dos':147C 'easili':109C 'engin':32B 'exploit':110C 'flaw':4A,27B 'frequent':143C 'h':172C 'h/ui':167C 'hang':53B,141C 'high':48B,113C 'high-privileg':47B 'impact':58B,159C 'innodb':3A,30B,83C 'integr':68B 'l/pr':166C 'let':5A 'loss':69B 'multipl':120C 'mysql':1A,21B,23B,34B,37B,74C,76C,81C,90C,98C,124C,126C,149C,151C 'mysql-clust':22B 'n/a':171C 'n/ac':165C 'n/i':170C 'n/s':168C 'network':44B,117C 'oper':20B 'oracl':80C 'packag':25B 'privileg':7A,49B,114C 'product':78C 'protocol':121C 'repeat':55B,144C 'result':134C 'score':156C 'server':2A,35B,75C,91C,125C,150C 'servic':62B 'state':70B 'storag':31B 'success':128C 'support':84C 'trigger':41B 'u/c':169C 'unauthor':136C 'user':8A 'vector':161C 'version':85C 'via':119C 'vulner':71C,111C,132C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server 8.4 up to 8.4.12, 9.7 up to 9.7.3, or 26.7 up to 26.7.1, and MySQL Cluster 8.0 up to 8.0.49, 8.4 up to 8.4.12, 9.7 up to 9.7.3, or 26.7 up to 26.7.1. Exposure depends on who holds high-privilege database accounts and whether the server is reachable from networks those users can reach. Deployments on versions outside these ranges can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:15+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-101618","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101618","severity":null,"published_at":"2026-10-20T22:18:15+00:00","modified_at":"2026-10-21T19:16:50+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","fetched_at":"2026-10-23T22:28:58+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}