{"id":"CVE-2026-125748","kind":"vulnerability","aliases":["CVE-2026-125748"],"related":[],"title":"Parabol: GraphQL mutation lets users change reactions in other organizations","description":"Parabol before 15.21.2 contains a missing authorization vulnerability in the addReactjiToReactable GraphQL mutation that allows authenticated users to tamper with reactions on other organizations' content. Attackers can pair their own meetingId with a reactableId of another tenant's reflection, comment, or sequential team prompt response to add or remove their reactions.","summary":"Parabol before 15.21.2 has a missing authorization check in the addReactjiToReactable GraphQL mutation. A logged-in user can pair their own meetingId with another organization's reactable ID and add or remove reactions on that content.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["graphql","multi-tenant","other","parabol","self-hosted"],"not_affected_if":["single-organization","version-15.21.2-or-later"],"how_to_check":"- Check the Parabol version you run; versions before `15.21.2` are affected.","fix":"- Parabol: upgrade to `15.21.2` or later","status":"open","published_at":"2026-11-10T16:17:20+00:00","first_seen_at":"2026-11-10T16:22:34+00:00","triaged_at":"2026-11-10T16:23:39+00:00","updated_at":"2026-11-10T16:23:39+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-11-10T16:23:39Z","model":"claude-haiku-5-5","output":{"fix":"- Parabol: upgrade to `15.21.2` or later","reach":"internet","title":"Parabol: GraphQL mutation lets users change reactions in other organizations","impact":"low","summary":"Parabol before 15.21.2 has a missing authorization check in the addReactjiToReactable GraphQL mutation. A logged-in user can pair their own meetingId with another organization's reactable ID and add or remove reactions on that content.","audience":"businesses","category":"other","nicknames":[],"who_cares":["parabol","self-hosted","graphql","multi-tenant"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"Authenticated users alter reactions on other organizations' content","analyst_note":"","how_to_check":"- Check the Parabol version you run; versions before `15.21.2` are affected.\n- unknown","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["version-15.21.2-or-later","single-organization"],"who_is_affected":"Self-hosted or managed Parabol deployments below 15.21.2 with multiple organizations on the same instance are exposed, since the flaw crosses tenant boundaries. Single-organization installs have less cross-tenant exposure. The sources do not say whether managed Parabol hosting has already been patched.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000708,"input_tokens":4628,"output_tokens":491,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-125748':13A,16A '-2026':12A,15A '15.21.2':28B,65C 'add':56B,109C 'addreactjitoreact':36B,73C 'allow':77C 'anoth':50B,98C 'attack':88C 'authent':78C 'author':32B,69C 'chang':6A 'check':33B 'comment':102C 'contain':66C 'content':62B,87C 'cve':11A,14A 'graphql':2A,17B,37B,74C 'host':25B 'id':54B 'let':4A 'log':41B 'logged-in':40B 'meetingid':48B,93C 'miss':31B,68C 'multi':19B 'multi-ten':18B 'mutat':3A,38B,75C 'organ':10A,51B,86C 'pair':45B,90C 'parabol':1A,22B,26B,63C 'prompt':106C 'reactabl':53B 'reactableid':96C 'reaction':7A,59B,83C,113C 'reflect':101C 'remov':58B,111C 'respons':107C 'self':24B 'self-host':23B 'sequenti':104C 'tamper':81C 'team':105C 'tenant':20B,99C 'user':5A,43B,79C 'vulner':70C","nicknames":[],"mitigations":[],"who_affected":"Self-hosted or managed Parabol deployments below 15.21.2 with multiple organizations on the same instance are exposed, since the flaw crosses tenant boundaries. Single-organization installs have less cross-tenant exposure. The sources do not say whether managed Parabol hosting has already been patched.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["graphql","medium","multitenant","other","parabol","selfhosted"],"campaign_type":null,"search_a":"'-125748':13A,16A '-2026':12A,15A 'chang':6A 'cve':11A,14A 'graphql':2A 'let':4A 'mutat':3A 'organ':10A 'parabol':1A 'reaction':7A 'user':5A","search_b":"'15.21.2':28B 'add':56B 'addreactjitoreact':36B 'anoth':50B 'author':32B 'check':33B 'content':62B 'graphql':17B,37B 'host':25B 'id':54B 'log':41B 'logged-in':40B 'meetingid':48B 'miss':31B 'multi':19B 'multi-ten':18B 'mutat':38B 'organ':51B 'pair':45B 'parabol':22B,26B 'reactabl':53B 'reaction':59B 'remov':58B 'self':24B 'self-host':23B 'tenant':20B 'user':43B","search_c":"'15.21.2':65C 'add':109C 'addreactjitoreact':73C 'allow':77C 'anoth':98C 'attack':88C 'authent':78C 'author':69C 'comment':102C 'contain':66C 'content':87C 'graphql':74C 'meetingid':93C 'miss':68C 'mutat':75C 'organ':86C 'pair':90C 'parabol':63C 'prompt':106C 'reactableid':96C 'reaction':83C,113C 'reflect':101C 'remov':111C 'respons':107C 'sequenti':104C 'tamper':81C 'team':105C 'tenant':99C 'user':79C 'vulner':70C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T16:17:20+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/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-2026-125748","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125748","severity":null,"published_at":"2026-11-10T16:17:20+00:00","modified_at":"2026-11-10T16:17:20+00:00","first_seen_at":"2026-11-10T16:22:34+00:00","fetched_at":"2026-11-10T16:22:34+00:00","note":null}],"documents":[{"id":116109,"url":"https://github.com/ParabolInc/parabol/commit/1f063b2f2768ad3a6138156ddce9d938f58e8005","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":116110,"url":"https://github.com/ParabolInc/parabol/releases/tag/v15.21.2","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":116111,"url":"https://www.vulncheck.com/advisories/parabol-before-15.21.2-missing-authorization-via-addreactjitoreactable-mutation","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"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}