{"id":"CVE-2018-25439","kind":"vulnerability","aliases":["CVE-2018-25439"],"related":[],"title":"MetInfo CMS: unauthenticated path traversal reads arbitrary server files","description":"MetInfo CMS 6.0.0 before 6.1.1 contains a path traversal vulnerability in /include/thumb.php that allows unauthenticated attackers to read arbitrary files via the dir parameter. Attackers can send crafted requests with backslash sequences bypassing the str_replace filter to read files like config_db.php on Windows. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14.","summary":"MetInfo CMS versions 6.0.0 before 6.1.1 let anyone send a crafted dir parameter to /include/thumb.php and read arbitrary files. On Windows, backslash sequences bypass the str_replace filter, exposing files such as config_db.php that hold database credentials.","severity":"high","cvss":8.7,"epss":0.00469,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["metinfo-cms","package","php","self-hosted","windows"],"not_affected_if":["not-running-metinfo","version-6.1.1-or-later"],"how_to_check":"Check the installed MetInfo version and whether it is below 6.1.1; the sources do not give a command to test for the traversal.","fix":"Upgrade MetInfo CMS to 6.1.1 or later.\nIf upgrading is not possible, rotate database credentials and restrict access to /include/thumb.php, but the sources do not describe a configuration workaround.","status":"open","published_at":"2026-10-22T11:17:03+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","triaged_at":"2026-10-23T22:35:22+00:00","updated_at":"2026-10-24T07:15:51+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-23T22:35:22Z","model":"claude-haiku-5-5","output":{"fix":"Upgrade MetInfo CMS to 6.1.1 or later.\nIf upgrading is not possible, rotate database credentials and restrict access to /include/thumb.php, but the sources do not describe a configuration workaround.","reach":"internet","title":"MetInfo CMS: unauthenticated path traversal reads arbitrary server files","impact":"high","summary":"MetInfo CMS versions 6.0.0 before 6.1.1 let anyone send a crafted dir parameter to /include/thumb.php and read arbitrary files. On Windows, backslash sequences bypass the str_replace filter, exposing files such as config_db.php that hold database credentials.","category":"package","who_cares":["metinfo-cms","php","windows","self-hosted"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker reads config files and database credentials from the server.","analyst_note":"Confirm the exploitation evidence from Shadowserver (observed 2023-10-14) and whether Linux installs are affected; the sources only describe the Windows backslash bypass.","how_to_check":"Check the installed MetInfo version and whether it is below 6.1.1; the sources do not give a command to test for the traversal.\nunknown","needs_analyst":true,"not_affected_if":["version-6.1.1-or-later","not-running-metinfo"],"user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000546,"input_tokens":2969,"output_tokens":499,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-10':117C '-14':118C '-2018':11A,14A '-25439':12A,15A '/include/thumb.php':39B,73C '2023':116C '6.0.0':28B,64C '6.1.1':30B,66C 'allow':75C 'anyon':32B 'arbitrari':7A,42B,80C 'attack':77C,86C 'backslash':46B,92C 'bypass':48B,94C 'cms':2A,18B,26B,63C 'config_db.php':57B,103C 'contain':67C 'craft':35B,89C 'credenti':61B 'cve':10A,13A 'databas':60B 'dir':36B,84C 'evid':107C 'exploit':106C 'expos':53B 'file':9A,43B,54B,81C,101C 'filter':52B,98C 'first':109C 'foundat':114C 'hold':59B 'host':23B 'let':31B 'like':102C 'metinfo':1A,17B,25B,62C 'metinfo-cm':16B 'observ':110C 'packag':19B 'paramet':37B,85C 'path':4A,69C 'php':20B 'read':6A,41B,79C,100C 'replac':51B,97C 'request':90C 'self':22B 'self-host':21B 'send':33B,88C 'sequenc':47B,93C 'server':8A 'shadowserv':113C 'str':50B,96C 'travers':5A,70C 'unauthent':3A,76C 'version':27B 'via':82C 'vulner':71C 'window':24B,45B,105C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-22T11:17:03+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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-2018-25439","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-25439","severity":null,"published_at":"2026-10-22T11:17:03+00:00","modified_at":"2026-10-22T17:40:46+00:00","first_seen_at":"2026-10-23T21:57:30+00:00","fetched_at":"2026-10-23T22:29:02+00:00","note":null},{"source":"epss","external_id":"CVE-2018-25439","url":"https://api.first.org/data/v1/epss?cve=CVE-2018-25439","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T07:15:51+00:00","fetched_at":"2026-10-25T12:38:51+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}