{"id":"CVE-2026-112904","kind":"vulnerability","aliases":["CVE-2026-112904"],"related":[],"title":"Vvveb CMS: admin backup controller reads and writes arbitrary server files","description":"Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. In versions 1.0.8.6 and prior, the nextRestore() and nextBackup() functions in the backup controller accept a file GET parameter and concatenate it directly to DIR_BACKUP without calling sanitizeFileName(). This allows an authenticated administrator to read arbitrary files on the server (via nextRestore) and write SQL dump content to arbitrary locations (via nextBackup). This is inconsistent with the sibling functions restore(), delete(), and download() which all correctly call sanitizeFileName() first. This issue has been patched via commit aa29cb0.","summary":"Vvveb, a PHP content management system, fails to sanitize a file parameter in its backup restore and backup functions. An logged-in administrator can read arbitrary files from the server and write SQL dump content to arbitrary paths.","severity":"high","cvss":8.7,"epss":0.00506,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["other","php","self-hosted","vvveb"],"not_affected_if":["patched-builds"],"how_to_check":null,"fix":"Update Vvveb to a release that includes commit aa29cb0; versions 1.0.8.6 and prior are affected. The fixed release number is unknown from the sources.","status":"open","published_at":"2026-10-23T12:18:11+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","triaged_at":"2026-10-23T22:35:05+00:00","updated_at":"2026-10-25T12:38:51+00:00","category":"other","confidence":0.7,"triage":{"at":"2026-10-23T22:35:05Z","model":"claude-haiku-5-5","output":{"fix":"Update Vvveb to a release that includes commit aa29cb0; versions 1.0.8.6 and prior are affected. The fixed release number is unknown from the sources.","reach":"internet","title":"Vvveb CMS: admin backup controller reads and writes arbitrary server files","impact":"high","summary":"Vvveb, a PHP content management system, fails to sanitize a file parameter in its backup restore and backup functions. An logged-in administrator can read arbitrary files from the server and write SQL dump content to arbitrary paths.","category":"other","who_cares":["vvveb","php","self-hosted"],"confidence":0.7,"needs_auth":"yes","worst_case":"Admin can read server files and write SQL dumps anywhere.","analyst_note":"","how_to_check":"unknown","needs_analyst":false,"not_affected_if":["patched-builds"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000868,"input_tokens":3041,"output_tokens":1127,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-112904':14A,17A '-2026':13A,16A '1.0.8.6':84C 'aa29cb0':159C 'accept':96C 'admin':3A 'administr':47B,115C 'allow':112C 'arbitrari':9A,50B,61B,118C,131C 'authent':114C 'backup':4A,38B,41B,94C,107C 'blog':78C 'build':76C 'builder':74C 'call':109C,149C 'cms':2A,71C 'commit':158C 'concaten':102C 'content':27B,59B,129C 'control':5A,95C 'correct':148C 'cve':12A,15A 'delet':143C 'dir':106C 'direct':104C 'download':145C 'dump':58B,128C 'easi':68C 'ecommerc':80C 'fail':30B 'file':11A,34B,51B,98C,119C 'first':151C 'function':42B,91C,141C 'get':99C 'host':22B 'inconsist':137C 'issu':153C 'locat':132C 'log':45B 'logged-in':44B 'manag':28B 'nextbackup':90C,134C 'nextrestor':88C,124C 'page':73C 'paramet':35B,100C 'patch':156C 'path':62B 'php':19B,26B 'power':66C 'prior':86C 'read':6A,49B,117C 'restor':39B,142C 'sanit':32B 'sanitizefilenam':110C,150C 'self':21B 'self-host':20B 'server':10A,54B,122C 'sibl':140C 'sql':57B,127C 'store':81C 'system':29B 'use':70C 'version':83C 'via':123C,133C,157C 'vvveb':1A,23B,24B,63C 'websit':77C 'without':108C 'write':8A,56B,126C","nicknames":[],"mitigations":[],"who_affected":null,"tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-23T12:18:11+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N","cvss_by":"security-advisories@github.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112904","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112904","severity":null,"published_at":"2026-10-23T12:18:11+00:00","modified_at":"2026-10-23T12:18:11+00:00","first_seen_at":"2026-10-23T21:57:32+00:00","fetched_at":"2026-10-23T22:29:03+00:00","note":null},{"source":"epss","external_id":"CVE-2026-112904","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112904","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-25T12:38:51+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"}