{"id":"CVE-2026-125376","kind":"vulnerability","aliases":["CVE-2026-125376"],"related":[],"title":"VanBlog: unauthenticated requests read private and hidden articles","description":"VanBlog through 0.54.0 contains an information disclosure vulnerability that allows unauthenticated attackers to read private and hidden articles via the POST /api/public/article/:id endpoint. Attackers can submit any non-empty password for private articles lacking an effective password, or request hidden articles, since getByIdWithPassword never checks the hidden flag, exposing full article content.","summary":"VanBlog, a self-hosted blog, exposes private and hidden articles through its public article endpoint. An unauthenticated attacker can read full article content by submitting any non-empty password or requesting a hidden article by ID.","severity":"medium","cvss":6.9,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"VanBlog","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["blog","package","self-hosted","vanblog"],"not_affected_if":["auth-gated-api","no-private-articles"],"how_to_check":"- Check the installed VanBlog version and compare it with the fixed release in the sources.\n- Test `POST /api/public/article/:id` on a hidden or private article with any non-empty password and see whether the full content is returned.","fix":null,"status":"open","published_at":"2026-11-10T00:17:10+00:00","first_seen_at":"2026-11-10T00:28:43+00:00","triaged_at":"2026-11-10T00:30:17+00:00","updated_at":"2026-11-10T00:30:17+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-10T00:30:17Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"internet","title":"VanBlog: unauthenticated requests read private and hidden articles","impact":"medium","summary":"VanBlog, a self-hosted blog, exposes private and hidden articles through its public article endpoint. An unauthenticated attacker can read full article content by submitting any non-empty password or requesting a hidden article by ID.","audience":"businesses","category":"package","nicknames":[],"who_cares":["vanblog","self-hosted","blog"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Private and hidden article content readable by anyone without credentials.","analyst_note":"Confirm the fixed version and the patch commit from the linked GitHub patch and the VulnCheck advisory; the fix field is unknown until then.","how_to_check":"- Check the installed VanBlog version and compare it with the fixed release in the sources.\n- Test `POST /api/public/article/:id` on a hidden or private article with any non-empty password and see whether the full content is returned.","plain_action":"","product_name":"VanBlog","needs_analyst":true,"not_affected_if":["no-private-articles","auth-gated-api"],"who_is_affected":"VanBlog instances at version 0.54.0 or earlier are affected, through the public POST /api/public/article/:id endpoint. Sites that keep no private or hidden articles, or that sit behind an access gate that blocks public API calls, have less exposure. The sources do not state a fixed version beyond a patch link.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000749,"input_tokens":4615,"output_tokens":574,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-125376':11A,14A '-2026':10A,13A '/api/public/article':81C '0.54.0':62C 'allow':69C 'articl':8A,32B,36B,44B,57B,77C,94C,102C,112C 'attack':40B,71C,84C 'blog':16B,27B 'check':106C 'contain':63C 'content':45B,113C 'cve':9A,12A 'disclosur':66C 'effect':97C 'empti':51B,90C 'endpoint':37B,83C 'expos':28B,110C 'flag':109C 'full':43B,111C 'getbyidwithpassword':104C 'hidden':7A,31B,56B,76C,101C,108C 'host':20B,26B 'id':59B,82C 'inform':65C 'lack':95C 'never':105C 'non':50B,89C 'non-empti':49B,88C 'packag':17B 'password':52B,91C,98C 'post':80C 'privat':5A,29B,74C,93C 'public':35B 'read':4A,42B,73C 'request':3A,54B,100C 'self':19B,25B 'self-host':18B,24B 'sinc':103C 'submit':47B,86C 'unauthent':2A,39B,70C 'vanblog':1A,15A,21B,22B,60C 'via':78C 'vulner':67C","nicknames":[],"mitigations":[],"who_affected":"VanBlog instances at version 0.54.0 or earlier are affected, through the public POST /api/public/article/:id endpoint. Sites that keep no private or hidden articles, or that sit behind an access gate that blocks public API calls, have less exposure. The sources do not state a fixed version beyond a patch link.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["vanblog"],"ptokens":["vanblog"],"labels":["blog","medium","package","selfhosted","vanblog","vendor"],"campaign_type":null,"search_a":"'-125376':11A,14A '-2026':10A,13A 'articl':8A 'cve':9A,12A 'hidden':7A 'privat':5A 'read':4A 'request':3A 'unauthent':2A 'vanblog':1A,15A","search_b":"'articl':32B,36B,44B,57B 'attack':40B 'blog':16B,27B 'content':45B 'empti':51B 'endpoint':37B 'expos':28B 'full':43B 'hidden':31B,56B 'host':20B,26B 'id':59B 'non':50B 'non-empti':49B 'packag':17B 'password':52B 'privat':29B 'public':35B 'read':42B 'request':54B 'self':19B,25B 'self-host':18B,24B 'submit':47B 'unauthent':39B 'vanblog':21B,22B","search_c":"'/api/public/article':81C '0.54.0':62C 'allow':69C 'articl':77C,94C,102C,112C 'attack':71C,84C 'check':106C 'contain':63C 'content':113C 'disclosur':66C 'effect':97C 'empti':90C 'endpoint':83C 'expos':110C 'flag':109C 'full':111C 'getbyidwithpassword':104C 'hidden':76C,101C,108C 'id':82C 'inform':65C 'lack':95C 'never':105C 'non':89C 'non-empti':88C 'password':91C,98C 'post':80C 'privat':74C,93C 'read':73C 'request':100C 'sinc':103C 'submit':86C 'unauthent':70C 'vanblog':60C 'via':78C 'vulner':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T00:17:10+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-2026-125376","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125376","severity":null,"published_at":"2026-11-10T00:17:10+00:00","modified_at":"2026-11-10T00:17:10+00:00","first_seen_at":"2026-11-10T00:28:43+00:00","fetched_at":"2026-11-10T00:28:43+00:00","note":null}],"documents":[{"id":111533,"url":"https://github.com/Mereithhh/vanblog/commit/81b868f4d568c8accff62b9c35d0e556d1e7970d","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":111534,"url":"https://www.vulncheck.com/advisories/vanblog-through-0.54.0-private-article-disclosure-via-public-password-endpoint","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"}