{"id":"CVE-2026-122324","kind":"vulnerability","aliases":["CVE-2026-122324"],"related":[],"title":"SplitPro: authenticated users can read other users' expenses by ID","description":"SplitPro through 2.1.6 contains an authorization bypass vulnerability that allows authenticated users to read other users' expenses by supplying arbitrary expenseId values to expense.getExpenseDetails. Attackers who obtain an expense UUID, such as removed former participants, can retrieve expense notes, recurrence schedules, and full user rows of participants and group members.","summary":"SplitPro through 2.1.6 lets any logged-in user fetch expense details for expenses they do not belong to by supplying an arbitrary expenseId. An attacker who has an expense UUID, such as a former group participant, can read expense notes, recurrence schedules, and full user records of participants and group members.","severity":"low","cvss":3.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","self-hosted","splitpro"],"not_affected_if":["no-external-accounts","single-user-instance"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-05T16:17:45+00:00","first_seen_at":"2026-11-05T16:40:02+00:00","triaged_at":"2026-11-05T16:41:52+00:00","updated_at":"2026-11-05T16:41:52+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-05T16:41:52Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"SplitPro: authenticated users can read other users' expenses by ID","impact":"medium","summary":"SplitPro through 2.1.6 lets any logged-in user fetch expense details for expenses they do not belong to by supplying an arbitrary expenseId. An attacker who has an expense UUID, such as a former group participant, can read expense notes, recurrence schedules, and full user records of participants and group members.","audience":"businesses","category":"package","nicknames":[],"who_cares":["self-hosted","splitpro"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"logged-in users read other users' expense notes and personal details","analyst_note":"Check the linked patch on github.com for the fixed version and confirm the reach and the CVSS 3.1 low rating against the NVD entry.","how_to_check":"unknown","plain_action":"","needs_analyst":true,"not_affected_if":["single-user-instance","no-external-accounts"],"who_is_affected":"Teams that self-host SplitPro 2.1.6 or earlier and have user accounts on the instance are exposed, since the flaw is an authorization check missing on expense.getExpenseDetails. Instances where only the operator uses the app, or that are kept off the internet, carry less risk. The sources do not say whether the fixed version is named in the product data.","user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"unknown"},"cost_usd":0.000684,"input_tokens":4283,"output_tokens":512,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-122324':13A,16A '-2026':12A,15A '2.1.6':24B,76C 'allow':83C 'arbitrari':44B,93C 'attack':47B,98C 'authent':2A,84C 'author':79C 'belong':39B 'bypass':80C 'contain':77C 'cve':11A,14A 'detail':33B 'expens':8A,32B,35B,51B,61B,90C,102C,111C 'expense.getexpensedetails':97C 'expenseid':45B,94C 'fetch':31B 'former':56B,107C 'full':66B,116C 'group':57B,72B,122C 'host':20B 'id':10A 'let':25B 'log':28B 'logged-in':27B 'member':73B,123C 'note':62B,112C 'obtain':100C 'packag':17B 'particip':58B,70B,108C,120C 'read':5A,60B,87C 'record':68B 'recurr':63B,113C 'remov':106C 'retriev':110C 'row':118C 'schedul':64B,114C 'self':19B 'self-host':18B 'splitpro':1A,21B,22B,74C 'suppli':42B,92C 'user':3A,7A,30B,67B,85C,89C,117C 'uuid':52B,103C 'valu':95C 'vulner':81C","nicknames":[],"mitigations":[],"who_affected":"Teams that self-host SplitPro 2.1.6 or earlier and have user accounts on the instance are exposed, since the flaw is an authorization check missing on expense.getExpenseDetails. Instances where only the operator uses the app, or that are kept off the internet, carry less risk. The sources do not say whether the fixed version is named in the product data.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["low","package","selfhosted","splitpro"],"campaign_type":null,"first_public_at":"2026-11-05T16:17:45+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/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-2026-122324","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-122324","severity":null,"published_at":"2026-11-05T16:17:45+00:00","modified_at":"2026-11-05T16:17:45+00:00","first_seen_at":"2026-11-05T16:40:02+00:00","fetched_at":"2026-11-05T16:40:02+00:00","note":null}],"documents":[{"id":77625,"url":"https://github.com/oss-apps/split-pro/commit/1a0f8f498098e4b90bd73e7b710860e1ea98cc49","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":77626,"url":"https://www.vulncheck.com/advisories/splitpro-through-2.1.6-authorization-bypass-via-expense-getexpensedetails","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"}],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}