{"id":"CVE-2026-101612","kind":"vulnerability","aliases":["CVE-2026-101612"],"related":[],"title":"MySQL Server: InnoDB flaw lets a privileged local 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. Difficult to exploit vulnerability allows high privileged attacker with logon to the infrastructure where MySQL Server, MySQL Cluster executes to compromise MySQL Server, MySQL Cluster.  Successful attacks require human interaction from a person other than the attacker. 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 4.0 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:L/AC:H/PR:H/UI:R/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 by a high-privileged user with logon to the host, causing a hang or repeatable crash. The sources describe only denial of service, with no code execution or data exposure.","severity":"medium","cvss":4.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","dba","mysql","package","self-hosted"],"not_affected_if":["managed-hosting","unaffected-version"],"how_to_check":"- Run `SELECT VERSION();` in the MySQL client and compare against the affected ranges: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.\n- Check whether MySQL Cluster (NDB) is in use, since the affected list includes it.","fix":"- Move MySQL Server 8.4 to a release after `8.4.12`, 9.7 to after `9.7.3`, and 26.7 to after `26.7.1`, per Oracle's April 2026 Critical Patch Update.\n- Move MySQL Cluster 8.0 to a release after `8.0.49` if on that line.","status":"open","published_at":"2026-10-20T22:18:14+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","triaged_at":"2026-10-25T04:41:57+00:00","updated_at":"2026-10-25T04:41:57+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:41:57Z","model":"claude-haiku-5-5","output":{"fix":"- Move MySQL Server 8.4 to a release after `8.4.12`, 9.7 to after `9.7.3`, and 26.7 to after `26.7.1`, per Oracle's April 2026 Critical Patch Update.\n- Move MySQL Cluster 8.0 to a release after `8.0.49` if on that line.","reach":"local","title":"MySQL Server: InnoDB flaw lets a privileged local user crash the database","impact":"low","summary":"A flaw in the InnoDB storage engine of MySQL Server and MySQL Cluster can be triggered by a high-privileged user with logon to the host, causing a hang or repeatable crash. The sources describe only denial of service, with no code execution or data exposure.","category":"package","nicknames":[],"who_cares":["mysql","database","self-hosted","dba"],"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();` in the MySQL client and compare against the affected ranges: 8.0.0-8.0.49, 8.4.0-8.4.12, 9.7.0-9.7.3, 26.7.0-26.7.1.\n- Check whether MySQL Cluster (NDB) is in use, since the affected list includes it.","needs_analyst":false,"not_affected_if":["managed-hosting","unaffected-version"],"who_is_affected":"Teams running MySQL Server or MySQL Cluster on the affected version ranges. The attacker needs a high-privileged logon on the host where the database runs, so exposure is mainly on shared hosts or where DBA-level accounts are spread widely. Teams on unaffected versions or on managed hosting that patches the database themselves can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000692,"input_tokens":3619,"output_tokens":661,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101612':15A,18A '-2026':14A,17A '/av':184C '26.7.0':98C,109C '26.7.1':99C,110C '3.1':174C,183C '4.0':177C '8.0.0':102C '8.0.49':103C '8.4.0':94C,104C '8.4.12':95C,105C '9.7.0':96C,106C '9.7.3':97C,107C 'abil':157C 'affect':90C 'allow':115C 'attack':118C,137C,147C,149C 'avail':178C 'base':175C 'caus':53B,159C 'cluster':38B,79C,101C,128C,135C,172C 'code':68B 'complet':166C 'compon':84C 'compromis':131C 'crash':10A,58B,165C 'cve':13A,16A 'cvss':173C,180C,182C 'data':71B 'databas':12A,19B 'dba':20B 'denial':63B 'describ':61B 'difficult':111C 'dos':167C 'engin':32B 'execut':69B,129C 'exploit':113C 'exposur':72B 'flaw':4A,27B 'frequent':163C 'h':192C 'h/pr':186C 'h/ui':187C 'hang':55B,161C 'high':45B,116C 'high-privileg':44B 'host':25B,52B 'human':139C 'impact':179C 'infrastructur':123C 'innodb':3A,30B,85C 'interact':140C 'l/ac':185C 'let':5A 'local':8A 'logon':49B,120C 'mysql':1A,21B,34B,37B,76C,78C,83C,92C,100C,125C,127C,132C,134C,169C,171C 'n/a':191C 'n/i':190C 'oracl':82C 'packag':22B 'person':143C 'privileg':7A,46B,117C 'product':80C 'r/s':188C 'repeat':57B,164C 'requir':138C 'result':154C 'score':176C 'self':24B 'self-host':23B 'server':2A,35B,77C,93C,126C,133C,170C 'servic':65B 'sourc':60B 'storag':31B 'success':136C,148C 'support':86C 'trigger':41B 'u/c':189C 'unauthor':156C 'user':9A,47B 'vector':181C 'version':87C 'vulner':73C,114C,152C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server or MySQL Cluster on the affected version ranges. The attacker needs a high-privileged logon on the host where the database runs, so exposure is mainly on shared hosts or where DBA-level accounts are spread widely. Teams on unaffected versions or on managed hosting that patches the database themselves can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:14+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H","cvss_by":"secalert_us@oracle.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-101612","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101612","severity":null,"published_at":"2026-10-20T22:18:14+00:00","modified_at":"2026-10-21T18:43:53+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"}