{"id":"CVE-2026-101754","kind":"vulnerability","aliases":["CVE-2026-101754"],"related":[],"title":"MySQL Server and Cluster: high-privilege client flaw can crash the server","description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Client programs).  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 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 4.4 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H).","summary":"A flaw in the MySQL client programs component of MySQL Server and MySQL Cluster lets a highly privileged, network-connected attacker cause a hang or repeatable crash of the server. The advisory describes a denial-of-service impact only, with no confidentiality or integrity loss.","severity":"medium","cvss":4.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["database","mysql","package","self-hosted"],"not_affected_if":["default-config"],"how_to_check":"- Run `mysqld --version` 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.","fix":"- Upgrade MySQL Server or MySQL Cluster to a release outside the affected ranges; the sources do not name the fixed version numbers.","status":"open","published_at":"2026-10-20T22:18:30+00:00","first_seen_at":"2026-10-23T21:57:23+00:00","triaged_at":"2026-10-25T04:37:00+00:00","updated_at":"2026-10-25T04:37:00+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-25T04:37:00Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade MySQL Server or MySQL Cluster to a release outside the affected ranges; the sources do not name the fixed version numbers.","reach":"network","title":"MySQL Server and Cluster: high-privilege client flaw can crash the server","impact":"low","summary":"A flaw in the MySQL client programs component of MySQL Server and MySQL Cluster lets a highly privileged, network-connected attacker cause a hang or repeatable crash of the server. The advisory describes a denial-of-service impact only, with no confidentiality or integrity loss.","category":"package","nicknames":[],"who_cares":["mysql","self-hosted","database"],"confidence":0.6,"needs_auth":"yes","worst_case":"Repeatable server crash or hang causing denial of service","analyst_note":"Check Oracle's MySQL Critical Patch Update advisory for the fixed versions and the exact trigger conditions; the NVD entry gives only the affected ranges.","how_to_check":"- Run `mysqld --version` 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.","needs_analyst":true,"not_affected_if":["default-config"],"who_is_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges that accept network connections from accounts with high privileges. The sources do not say which deployment or configuration patterns trigger it, so exposure beyond the version range is unknown.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000668,"input_tokens":3578,"output_tokens":621,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101754':16A,19A '-2026':15A,18A '/av':168C '26.7.0':99C,110C '26.7.1':100C,111C '3.1':158C,167C '4.4':161C '8.0.0':103C '8.0.49':104C '8.4.0':95C,105C '8.4.12':96C,106C '9.7.0':97C,107C '9.7.3':98C,108C 'abil':141C 'access':122C 'advisori':58B 'affect':91C 'allow':116C 'attack':47B,119C,133C 'avail':162C 'base':159C 'caus':48B,143C 'client':8A,31B,85C 'cluster':4A,39B,79C,102C,131C,156C 'complet':150C 'compon':33B,84C 'compromis':127C 'confidenti':69B 'connect':46B 'crash':11A,53B,149C 'cve':14A,17A 'cvss':157C,164C,166C 'databas':20B 'denial':62B 'denial-of-servic':61B 'describ':59B 'difficult':112C 'dos':151C 'exploit':114C 'flaw':9A,27B 'frequent':147C 'h':176C 'h/pr':170C 'h/ui':171C 'hang':50B,145C 'high':6A,42B,117C 'high-privileg':5A 'host':25B 'impact':65B,163C 'integr':71B 'let':40B 'loss':72B 'multipl':124C 'mysql':1A,21B,30B,35B,38B,76C,78C,83C,93C,101C,128C,130C,153C,155C 'n/a':175C 'n/ac':169C 'n/i':174C 'n/s':172C 'network':45B,121C 'network-connect':44B 'oracl':82C 'packag':22B 'privileg':7A,43B,118C 'product':80C 'program':32B,86C 'protocol':125C 'repeat':52B,148C 'result':138C 'score':160C 'self':24B 'self-host':23B 'server':2A,13A,36B,56B,77C,94C,129C,154C 'servic':64B 'success':132C 'support':87C 'u/c':173C 'unauthor':140C 'vector':165C 'version':88C 'via':123C 'vulner':73C,115C,136C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges that accept network connections from accounts with high privileges. The sources do not say which deployment or configuration patterns trigger it, so exposure beyond the version range is unknown.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-20T22:18:30+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/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-2026-101754","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101754","severity":null,"published_at":"2026-10-20T22:18:30+00:00","modified_at":"2026-10-22T18:17:19+00:00","first_seen_at":"2026-10-23T21:57:23+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"}