{"id":"CVE-2026-101629","kind":"vulnerability","aliases":["CVE-2026-101629"],"related":[],"title":"MySQL Server: InnoDB flaw lets a privileged user crash the server","description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: InnoDB).  Supported versions that are affected are MySQL Server: 9.7.0-9.7.3, 26.7.0-26.7.1; MySQL Cluster: 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 lets a high-privilege account cause a hang or repeatable crash over the network. The impact is denial of service only; the sources do not report data theft or code execution.","severity":"medium","cvss":4.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","mysql","mysql-cluster","package","self-hosted"],"not_affected_if":["default-config"],"how_to_check":"- Run `SELECT VERSION();` on each MySQL Server and MySQL Cluster node and compare against the affected ranges: 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1.\n- Confirm which accounts hold high privileges on the server; the sources say the attacker must be a high-privilege user.","fix":"- Upgrade MySQL Server and MySQL Cluster to a release after the affected ranges (9.7.3 and 26.7.1 are the last affected versions listed; the fixed version is unknown from the sources).\n- Apply Oracle's July 2026 Critical Patch Update when it is available for your build.","status":"open","published_at":"2026-10-20T22:18:16+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","triaged_at":"2026-10-25T04:31:31+00:00","updated_at":"2026-10-25T04:31:31+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:31:31Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade MySQL Server and MySQL Cluster to a release after the affected ranges (9.7.3 and 26.7.1 are the last affected versions listed; the fixed version is unknown from the sources).\n- Apply Oracle's July 2026 Critical Patch Update when it is available for your build.","reach":"network","title":"MySQL Server: InnoDB flaw lets a privileged user crash the server","impact":"low","summary":"A flaw in the InnoDB storage engine of MySQL Server and MySQL Cluster lets a high-privilege account cause a hang or repeatable crash over the network. The impact is denial of service only; the sources do not report data theft or code execution.","category":"package","nicknames":[],"who_cares":["mysql","database","self-hosted","mysql-cluster"],"confidence":0.6,"needs_auth":"yes","worst_case":"Database server hangs or repeatedly crashes, causing a full denial of service.","analyst_note":"Confirm the fixed version and the July 2026 CPU patch number from Oracle's advisory; the NVD entry gives only the affected ranges.","how_to_check":"- Run `SELECT VERSION();` on each MySQL Server and MySQL Cluster node and compare against the affected ranges: 9.7.0 through 9.7.3, and 26.7.0 through 26.7.1.\n- Confirm which accounts hold high privileges on the server; the sources say the attacker must be a high-privilege user.","needs_analyst":true,"not_affected_if":["default-config"],"who_is_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges. The attacker needs a high-privilege database account and network access to the service, so exposure is lower on servers reachable only from trusted internal hosts. Installations on other MySQL versions are not listed as affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000687,"input_tokens":3540,"output_tokens":667,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101629':14A,17A '-2026':13A,16A '/av':159C '26.7.0':95C,102C '26.7.1':96C,103C '3.1':149C,158C '4.9':152C '9.7.0':93C,99C '9.7.3':94C,100C 'abil':132C 'access':113C 'account':45B 'affect':89C 'allow':107C 'attack':110C,124C 'avail':153C 'base':150C 'caus':46B,134C 'cluster':22B,39B,78C,98C,122C,147C 'code':70B 'complet':141C 'compon':83C 'compromis':118C 'crash':9A,51B,140C 'cve':12A,15A 'cvss':148C,155C,157C 'data':67B 'databas':18B 'denial':58B 'dos':142C 'easili':104C 'engin':33B 'execut':71B 'exploit':105C 'flaw':4A,28B 'frequent':138C 'h':167C 'h/ui':162C 'hang':48B,136C 'high':43B,108C 'high-privileg':42B 'host':26B 'impact':56B,154C 'innodb':3A,31B,84C 'l/pr':161C 'let':5A,40B 'multipl':115C 'mysql':1A,19B,21B,35B,38B,75C,77C,82C,91C,97C,119C,121C,144C,146C 'mysql-clust':20B 'n/a':166C 'n/ac':160C 'n/i':165C 'n/s':163C 'network':54B,112C 'oracl':81C 'packag':23B 'privileg':7A,44B,109C 'product':79C 'protocol':116C 'repeat':50B,139C 'report':66B 'result':129C 'score':151C 'self':25B 'self-host':24B 'server':2A,11A,36B,76C,92C,120C,145C 'servic':60B 'sourc':63B 'storag':32B 'success':123C 'support':85C 'theft':68B 'u/c':164C 'unauthor':131C 'user':8A 'vector':156C 'version':86C 'via':114C 'vulner':72C,106C,127C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges. The attacker needs a high-privilege database account and network access to the service, so exposure is lower on servers reachable only from trusted internal hosts. Installations on other MySQL versions are not listed as affected.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:16+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-2026-101629","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101629","severity":null,"published_at":"2026-10-20T22:18:16+00:00","modified_at":"2026-10-21T19:16:51+00:00","first_seen_at":"2026-10-23T21:57:22+00:00","fetched_at":"2026-10-23T22:28:59+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"}