{"id":"CVE-2026-121414","kind":"vulnerability","aliases":["CVE-2026-121414"],"related":[],"title":"Parse Server: crafted object update crashes the Node process","description":"Parse Server before 8.6.110 and 9.0.0 before 9.10.6-alpha.2 fails to contain a serialization error when an object update uses a dot notation key targeting a pointer field's object identifier on a class with an afterSave trigger. Attackers, including unauthenticated clients when objects are writable without a session, can send such an update to crash the Node process.","summary":"Parse Server, a Node.js backend framework, fails to contain a serialization error when an object update uses a dot-notation key on a pointer field in a class that has an afterSave trigger. An attacker can send that update to crash the Node process, causing denial of service.","severity":"high","cvss":8.2,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["backend","node","package","parse-server","self-hosted"],"not_affected_if":["auth-required","no-aftersave-trigger"],"how_to_check":"- Check the installed version with `npm ls parse-server` in the project.\n- Look for a class with an `afterSave` trigger whose objects accept writes from clients without a session.","fix":"- Parse Server `8.6.110` or later in the 8.x line.\n- Parse Server `9.10.6-alpha.2` or later in the 9.x line.","status":"open","published_at":"2026-11-03T15:17:30+00:00","first_seen_at":"2026-11-03T15:21:58+00:00","triaged_at":"2026-11-03T15:22:44+00:00","updated_at":"2026-11-03T15:22:44+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-03T15:22:44Z","model":"claude-haiku-5-5","output":{"fix":"- Parse Server `8.6.110` or later in the 8.x line.\n- Parse Server `9.10.6-alpha.2` or later in the 9.x line.","reach":"internet","title":"Parse Server: crafted object update crashes the Node process","impact":"low","summary":"Parse Server, a Node.js backend framework, fails to contain a serialization error when an object update uses a dot-notation key on a pointer field in a class that has an afterSave trigger. An attacker can send that update to crash the Node process, causing denial of service.","audience":"developers","category":"package","nicknames":[],"who_cares":["parse-server","node","self-hosted","backend"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Remote request crashes the Node process, causing service outage","analyst_note":"","how_to_check":"- Check the installed version with `npm ls parse-server` in the project.\n- Look for a class with an `afterSave` trigger whose objects accept writes from clients without a session.","plain_action":"","needs_analyst":false,"not_affected_if":["auth-required","no-aftersave-trigger"],"who_is_affected":"Applications that run Parse Server and define an afterSave trigger on a class with pointer fields. Exposure is highest where objects are writable without a session, since unauthenticated clients can then send the crashing update. Deployments that do not use afterSave triggers on such classes are less exposed.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"high"},"cost_usd":0.000683,"input_tokens":4195,"output_tokens":526,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-121414':12A,15A '-2026':11A,14A '8.6.110':77C '9.0.0':79C '9.10.6':81C 'aftersav':57B,110C 'alpha.2':82C 'attack':60B,112C 'backend':16B,29B 'caus':70B 'class':53B,107C 'client':115C 'contain':33B,85C 'craft':3A 'crash':6A,66B,129C 'cve':10A,13A 'denial':71B 'dot':44B,95C 'dot-not':43B 'error':36B,88C 'fail':31B,83C 'field':50B,101C 'framework':30B 'host':24B 'identifi':104C 'includ':113C 'key':46B,97C 'node':8A,17B,68B,131C 'node.js':28B 'notat':45B,96C 'object':4A,39B,91C,103C,117C 'packag':18B 'pars':1A,20B,25B,74C 'parse-serv':19B 'pointer':49B,100C 'process':9A,69B,132C 'self':23B 'self-host':22B 'send':62B,124C 'serial':35B,87C 'server':2A,21B,26B,75C 'servic':73B 'session':122C 'target':98C 'trigger':58B,111C 'unauthent':114C 'updat':5A,40B,64B,92C,127C 'use':41B,93C 'without':120C 'writabl':119C","nicknames":[],"mitigations":[],"who_affected":"Applications that run Parse Server and define an afterSave trigger on a class with pointer fields. Exposure is highest where objects are writable without a session, since unauthenticated clients can then send the crashing update. Deployments that do not use afterSave triggers on such classes are less exposed.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"developers","plain_action":null,"pkeys":[],"ptokens":[],"labels":["backend","high","node","package","parseserver","selfhosted"],"first_public_at":"2026-10-19T00:45:12+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-121414","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121414","severity":null,"published_at":"2026-11-03T15:17:30+00:00","modified_at":"2026-11-03T15:17:31+00:00","first_seen_at":"2026-11-03T15:21:58+00:00","fetched_at":"2026-11-03T15:21:58+00:00","note":null}],"documents":[{"id":58351,"url":"https://github.com/parse-community/parse-server/security/advisories/GHSA-wc3c-6843-q7mv","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-19T00:45:12+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":58352,"url":"https://www.vulncheck.com/advisories/parse-server-before-8.6.110-and-9.0.0-before-9.10.6-alpha.2-denial-of-service-via-aftersave-pointer-update","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}