{"id":"CVE-2026-121736","kind":"vulnerability","aliases":["CVE-2026-121736"],"related":[],"title":"NocoDB: unauthenticated requests can mint OAuth authorization codes","description":"NocoDB 0.300.0 before 2026.08.0 contains a missing authentication vulnerability in the POST /api/v2/oauth/authorize handler that allows unauthenticated attackers to create OAuth authorization codes. Attackers can send anonymous requests with client_id, redirect_uri and approved=true to insert unbounded ownerless authorization code records, limited only by rate limiting.","summary":"NocoDB versions from 0.300.0 before 2026.08.0 expose the POST /api/v2/oauth/authorize endpoint without authentication. An anonymous attacker can insert unlimited ownerless OAuth authorization code records, bounded only by rate limiting.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["nocodb","oauth","package","self-hosted"],"not_affected_if":["managed-hosting","version-2026.08.0-or-later"],"how_to_check":"- Check the NocoDB version, for example with the running instance's about page or the image tag, and see whether it is `0.300.0` or later but before `2026.08.0`\n- Confirm whether the instance is reachable from the internet and whether a reverse proxy restricts `/api/v2/oauth/authorize`","fix":"- Upgrade NocoDB to `2026.08.0` or later","status":"open","published_at":"2026-11-03T23:17:37+00:00","first_seen_at":"2026-11-03T23:45:16+00:00","triaged_at":"2026-11-03T23:45:35+00:00","updated_at":"2026-11-03T23:45:35+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-03T23:45:35Z","model":"claude-haiku-5-5","output":{"fix":"- Upgrade NocoDB to `2026.08.0` or later","reach":"internet","title":"NocoDB: unauthenticated requests can mint OAuth authorization codes","impact":"medium","summary":"NocoDB versions from 0.300.0 before 2026.08.0 expose the POST /api/v2/oauth/authorize endpoint without authentication. An anonymous attacker can insert unlimited ownerless OAuth authorization code records, bounded only by rate limiting.","audience":"businesses","category":"package","nicknames":[],"who_cares":["nocodb","self-hosted","oauth"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"attacker creates unlimited unowned OAuth authorization codes anonymously","analyst_note":"","how_to_check":"- Check the NocoDB version, for example with the running instance's about page or the image tag, and see whether it is `0.300.0` or later but before `2026.08.0`\n- Confirm whether the instance is reachable from the internet and whether a reverse proxy restricts `/api/v2/oauth/authorize`","plain_action":"","needs_analyst":false,"not_affected_if":["managed-hosting","version-2026.08.0-or-later"],"who_is_affected":"NocoDB instances in the affected range that accept requests on the OAuth authorize endpoint, most likely self-hosted deployments reachable from the network. Sources do not describe a non-default configuration that is required; treat any reachable instance in the range as exposed.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000705,"input_tokens":4238,"output_tokens":563,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121736':11A,14A '-2026':10A,13A '/api/v2/oauth/authorize':30B,62C '0.300.0':24B,51C '2026.08.0':26B,53C 'allow':65C 'anonym':35B,76C 'approv':84C 'attack':36B,67C,73C 'authent':33B,57C 'author':7A,42B,71C,90C 'bound':45B 'client':79C 'code':8A,43B,72C,91C 'contain':54C 'creat':69C 'cve':9A,12A 'endpoint':31B 'expos':27B 'handler':63C 'host':20B 'id':80C 'insert':38B,87C 'limit':49B,93C,97C 'mint':5A 'miss':56C 'nocodb':1A,15B,21B,50C 'oauth':6A,16B,41B,70C 'ownerless':40B,89C 'packag':17B 'post':29B,61C 'rate':48B,96C 'record':44B,92C 'redirect':81C 'request':3A,77C 'self':19B 'self-host':18B 'send':75C 'true':85C 'unauthent':2A,66C 'unbound':88C 'unlimit':39B 'uri':82C 'version':22B 'vulner':58C 'without':32B","nicknames":[],"mitigations":[],"who_affected":"NocoDB instances in the affected range that accept requests on the OAuth authorize endpoint, most likely self-hosted deployments reachable from the network. Sources do not describe a non-default configuration that is required; treat any reachable instance in the range as exposed.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","nocodb","oauth","package","selfhosted"],"campaign_type":null,"first_public_at":"2026-11-02T08:48:21+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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-2026-121736","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121736","severity":null,"published_at":"2026-11-03T23:17:37+00:00","modified_at":"2026-11-03T23:17:37+00:00","first_seen_at":"2026-11-03T23:45:16+00:00","fetched_at":"2026-11-03T23:45:16+00:00","note":null}],"documents":[{"id":49824,"url":"https://github.com/nocodb/nocodb/commit/42128735eba328d157c2e90b98795cb248dc0847","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":49825,"url":"https://github.com/nocodb/nocodb/releases/tag/2026.08.0","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"},{"id":61695,"url":"https://github.com/nocodb/nocodb/security/advisories/GHSA-532v-ccph-m3xg","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-11-02T08:48:21+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":61696,"url":"https://www.vulncheck.com/advisories/nocodb-0.300.0-before-2026.08.0-unauthenticated-oauth-authorization-code-creation","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"}