{"id":"CVE-2026-123505","kind":"vulnerability","aliases":["CVE-2026-123505"],"related":[],"title":"Vikunja: world-readable storage files let local users read data","description":"Vikunja before 2.7.1 contains an insecure file permissions vulnerability that allows local users to read stored data because localStorage.Write creates blobs world-readable. Local attackers on a shared host can read attachments, project backgrounds and exports, and copy the SQLite database to crack password hashes offline.","summary":"Vikunja before 2.7.1 creates storage blobs with world-readable file permissions. A local user on the same machine can read attachments, project backgrounds, exports and the SQLite database, then crack password hashes offline.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["runtime","self-hosted","vikunja"],"not_affected_if":["managed-hosting","single-user-host"],"how_to_check":"- Check the Vikunja version with `vikunja version` or the release tag in your deployment\n- Inspect permissions on the Vikunja files directory and SQLite database with `ls -l` and confirm they are not world-readable","fix":"- Vikunja: move to `2.7.1` or later","status":"open","published_at":"2026-11-08T02:16:38+00:00","first_seen_at":"2026-11-08T02:21:08+00:00","triaged_at":"2026-11-08T02:24:50+00:00","updated_at":"2026-11-08T02:24:50+00:00","category":"runtime","confidence":0.7,"triage":{"at":"2026-11-08T02:24:50Z","model":"claude-haiku-5-5","output":{"fix":"- Vikunja: move to `2.7.1` or later","reach":"local","title":"Vikunja: world-readable storage files let local users read data","impact":"medium","summary":"Vikunja before 2.7.1 creates storage blobs with world-readable file permissions. A local user on the same machine can read attachments, project backgrounds, exports and the SQLite database, then crack password hashes offline.","audience":"businesses","category":"runtime","nicknames":[],"who_cares":["vikunja","self-hosted"],"confidence":0.7,"fix_status":"available","needs_auth":"yes","worst_case":"local users read attachments, exports and password hashes","analyst_note":"","how_to_check":"- Check the Vikunja version with `vikunja version` or the release tag in your deployment\n- Inspect permissions on the Vikunja files directory and SQLite database with `ls -l` and confirm they are not world-readable\n- unknown for other checks","plain_action":"","needs_analyst":false,"not_affected_if":["managed-hosting","single-user-host"],"who_is_affected":"Teams that self-host Vikunja on a shared host or any machine where other local users have accounts. Exposure comes from the file permissions Vikunja sets on its stored blobs and database, so a managed instance where only the vendor controls the host is less exposed. Hosts with only one trusted user can deprioritise it.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000682,"input_tokens":4267,"output_tokens":511,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-123505':14A,17A '-2026':13A,16A '2.7.1':25B,59C 'allow':67C 'attach':44B,89C 'attack':82C 'background':46B,91C 'blob':28B,77C 'contain':60C 'copi':95C 'crack':53B,100C 'creat':26B,76C 'cve':12A,15A 'data':11A,73C 'databas':51B,98C 'export':47B,93C 'file':6A,33B,63C 'hash':55B,102C 'host':21B,86C 'insecur':62C 'let':7A 'local':8A,36B,68C,81C 'localstorage.write':75C 'machin':41B 'offlin':56B,103C 'password':54B,101C 'permiss':34B,64C 'project':45B,90C 'read':10A,43B,71C,88C 'readabl':4A,32B,80C 'runtim':18B 'self':20B 'self-host':19B 'share':85C 'sqlite':50B,97C 'storag':5A,27B 'store':72C 'user':9A,37B,69C 'vikunja':1A,22B,23B,57C 'vulner':65C 'world':3A,31B,79C 'world-read':2A,30B,78C","nicknames":[],"mitigations":[],"who_affected":"Teams that self-host Vikunja on a shared host or any machine where other local users have accounts. Exposure comes from the file permissions Vikunja sets on its stored blobs and database, so a managed instance where only the vendor controls the host is less exposed. Hosts with only one trusted user can deprioritise it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["medium","runtime","selfhosted","vikunja"],"campaign_type":null,"search_a":"'-123505':14A,17A '-2026':13A,16A 'cve':12A,15A 'data':11A 'file':6A 'let':7A 'local':8A 'read':10A 'readabl':4A 'storag':5A 'user':9A 'vikunja':1A 'world':3A 'world-read':2A","search_b":"'2.7.1':25B 'attach':44B 'background':46B 'blob':28B 'crack':53B 'creat':26B 'databas':51B 'export':47B 'file':33B 'hash':55B 'host':21B 'local':36B 'machin':41B 'offlin':56B 'password':54B 'permiss':34B 'project':45B 'read':43B 'readabl':32B 'runtim':18B 'self':20B 'self-host':19B 'sqlite':50B 'storag':27B 'user':37B 'vikunja':22B,23B 'world':31B 'world-read':30B","search_c":"'2.7.1':59C 'allow':67C 'attach':89C 'attack':82C 'background':91C 'blob':77C 'contain':60C 'copi':95C 'crack':100C 'creat':76C 'data':73C 'databas':98C 'export':93C 'file':63C 'hash':102C 'host':86C 'insecur':62C 'local':68C,81C 'localstorage.write':75C 'offlin':103C 'password':101C 'permiss':64C 'project':90C 'read':71C,88C 'readabl':80C 'share':85C 'sqlite':97C 'store':72C 'user':69C 'vikunja':57C 'vulner':65C 'world':79C 'world-read':78C","first_public_at":"2026-10-22T10:02:18+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/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-2026-123505","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123505","severity":null,"published_at":"2026-11-08T02:16:38+00:00","modified_at":"2026-11-08T02:16:38+00:00","first_seen_at":"2026-11-08T02:21:08+00:00","fetched_at":"2026-11-08T02:21:08+00:00","note":null}],"documents":[{"id":99159,"url":"https://github.com/go-vikunja/vikunja/security/advisories/GHSA-9rfw-7hv4-3vv3","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-22T10:02:18+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":99160,"url":"https://www.vulncheck.com/advisories/vikunja-before-2.7.1-world-readable-local-file-storage-and-sqlite-database","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"}