{"id":"CVE-2026-101617","kind":"vulnerability","aliases":["CVE-2026-101617"],"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 highly privileged account to hang or repeatedly crash the server. The impact is denial of service only, with no confidentiality or integrity loss stated in the sources.","severity":"medium","cvss":4.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","mysql","package","self-hosted"],"not_affected_if":["auth-required","default-config"],"how_to_check":"- Run `SELECT VERSION();` on the MySQL server and compare against the affected ranges: 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, 26.7.0-26.7.1\n- Check whether the installed version is outside those ranges, which means it is not affected","fix":null,"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":0.6,"triage":{"at":"2026-10-25T04:32:42Z","model":"claude-haiku-5-5","output":{"fix":"unknown","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 highly privileged account to hang or repeatedly crash the server. The impact is denial of service only, with no confidentiality or integrity loss stated in the sources.","category":"package","nicknames":[],"who_cares":["mysql","self-hosted","database"],"confidence":0.6,"needs_auth":"yes","worst_case":"Database server hangs or crashes repeatedly, causing full denial of service","analyst_note":"Fixed version numbers are not in the sources; check the Oracle MySQL Critical Patch Update advisory for the patched releases.","how_to_check":"- Run `SELECT VERSION();` on the MySQL server and compare against the affected ranges: 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, 26.7.0-26.7.1\n- Check whether the installed version is outside those ranges, which means it is not affected","needs_analyst":true,"not_affected_if":["auth-required","default-config"],"who_is_affected":"Teams running MySQL Server or MySQL Cluster in the affected version ranges. The attacker needs a high-privilege database account and network access, so servers that only accept connections from trusted application hosts with restricted accounts face lower risk. Instances on versions outside the listed ranges are not affected.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000668,"input_tokens":3579,"output_tokens":620,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101617':14A,17A '-2026':13A,16A '/av':165C '26.7.0':97C,108C '26.7.1':98C,109C '3.1':155C,164C '4.9':158C '8.0.0':101C '8.0.49':102C '8.4.0':93C,103C '8.4.12':94C,104C '9.7.0':95C,105C '9.7.3':96C,106C 'abil':138C 'access':119C 'account':47B 'affect':89C 'allow':113C 'attack':116C,130C 'avail':159C 'base':156C 'caus':140C 'cluster':36B,78C,100C,128C,153C 'complet':147C 'compon':83C 'compromis':124C 'confidenti':64B 'crash':9A,52B,146C 'cve':12A,15A 'cvss':154C,161C,163C 'databas':11A,18B 'denial':58B 'dos':148C 'easili':110C 'engin':30B 'exploit':111C 'flaw':4A,25B 'frequent':144C 'h':173C 'h/ui':168C 'hang':49B,142C 'high':45B,114C 'host':23B 'impact':56B,160C 'innodb':3A,28B,84C 'integr':66B 'l/pr':167C 'let':5A 'loss':67B 'multipl':121C 'mysql':1A,19B,32B,35B,75C,77C,82C,91C,99C,125C,127C,150C,152C 'n/a':172C 'n/ac':166C 'n/i':171C 'n/s':169C 'network':42B,118C 'oracl':81C 'packag':20B 'privileg':7A,46B,115C 'product':79C 'protocol':122C 'repeat':51B,145C 'result':135C 'score':157C 'self':22B 'self-host':21B 'server':2A,33B,54B,76C,92C,126C,151C 'servic':60B 'sourc':71B 'state':68B 'storag':29B 'success':129C 'support':85C 'trigger':39B 'u/c':170C 'unauthor':137C 'user':8A 'vector':162C 'version':86C 'via':120C 'vulner':72C,112C,133C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server or MySQL Cluster in the affected version ranges. The attacker needs a high-privilege database account and network access, so servers that only accept connections from trusted application hosts with restricted accounts face lower risk. Instances on versions outside the listed ranges are not affected.","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-2026-101617","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101617","severity":null,"published_at":"2026-10-20T22:18:15+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"}