{"id":"CVE-2026-101613","kind":"vulnerability","aliases":["CVE-2026-101613"],"related":[],"title":"MySQL Server: DDL flaw lets a privileged user crash the server","description":"Vulnerability in the MySQL Server, MySQL Cluster product of Oracle MySQL (component: Server: DDL).  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 DDL component of MySQL Server and MySQL Cluster lets a highly privileged user over the network hang or repeatedly crash the server. The impact is denial of service; the sources report no data read or code execution.","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 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1; MySQL Cluster 8.0.0 to 8.0.49, 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1.","fix":"- Upgrade MySQL Server or MySQL Cluster to a release after the affected ranges listed above; the sources do not name the fixed version numbers.\n- Until patched, limit which accounts hold high privileges on the server.","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":0.8,"triage":{"at":"2026-10-25T04:32:42Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade MySQL Server or MySQL Cluster to a release after the affected ranges listed above; the sources do not name the fixed version numbers.\n- Until patched, limit which accounts hold high privileges on the server.","reach":"network","title":"MySQL Server: DDL flaw lets a privileged user crash the server","impact":"low","summary":"A flaw in the DDL component of MySQL Server and MySQL Cluster lets a highly privileged user over the network hang or repeatedly crash the server. The impact is denial of service; the sources report no data read or code execution.","category":"package","nicknames":[],"who_cares":["mysql","self-hosted","database"],"confidence":0.8,"needs_auth":"yes","worst_case":"Server hangs or repeatedly crashes, causing complete denial of service","analyst_note":"","how_to_check":"- Run `SELECT VERSION();` on the MySQL server and compare against the affected ranges: MySQL Server 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1; MySQL Cluster 8.0.0 to 8.0.49, 8.4.0 to 8.4.12, 9.7.0 to 9.7.3, 26.7.0 to 26.7.1.","needs_analyst":false,"not_affected_if":["default-config","auth-required"],"who_is_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges. Exposure needs an account with high privileges and network access to the database, so servers reachable only by trusted administrators carry less risk. Deployments on other MySQL versions outside these ranges can skip it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000665,"input_tokens":3581,"output_tokens":613,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-101613':14A,17A '-2026':13A,16A '/av':159C '26.7.0':91C,102C '26.7.1':92C,103C '3.1':149C,158C '4.9':152C '8.0.0':95C '8.0.49':96C '8.4.0':87C,97C '8.4.12':88C,98C '9.7.0':89C,99C '9.7.3':90C,100C 'abil':132C 'access':113C 'affect':83C 'allow':107C 'attack':110C,124C 'avail':153C 'base':150C 'caus':134C 'cluster':35B,71C,94C,122C,147C 'code':63B 'complet':141C 'compon':29B,76C 'compromis':118C 'crash':9A,47B,140C 'cve':12A,15A 'cvss':148C,155C,157C 'data':60B 'databas':18B 'ddl':3A,28B,78C 'denial':53B 'dos':142C 'easili':104C 'execut':64B 'exploit':105C 'flaw':4A,25B 'frequent':138C 'h':167C 'h/ui':162C 'hang':44B,136C 'high':38B,108C 'host':23B 'impact':51B,154C 'l/pr':161C 'let':5A,36B 'multipl':115C 'mysql':1A,19B,31B,34B,68C,70C,75C,85C,93C,119C,121C,144C,146C 'n/a':166C 'n/ac':160C 'n/i':165C 'n/s':163C 'network':43B,112C 'oracl':74C 'packag':20B 'privileg':7A,39B,109C 'product':72C 'protocol':116C 'read':61B 'repeat':46B,139C 'report':58B 'result':129C 'score':151C 'self':22B 'self-host':21B 'server':2A,11A,32B,49B,69C,77C,86C,120C,145C 'servic':55B 'sourc':57B 'success':123C 'support':79C 'u/c':164C 'unauthor':131C 'user':8A,40B 'vector':156C 'version':80C 'via':114C 'vulner':65C,106C,127C","nicknames":[],"mitigations":[],"who_affected":"Teams running MySQL Server or MySQL Cluster in the listed version ranges. Exposure needs an account with high privileges and network access to the database, so servers reachable only by trusted administrators carry less risk. Deployments on other MySQL 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-2026-101613","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101613","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"}