{"id":"CVE-2026-102800","kind":"vulnerability","aliases":["CVE-2026-102800"],"related":[],"title":"Joomla DJ-HelpfulArticles: unauthenticated stored XSS via vote widget IP field","description":"Joomla Extension - dj-extensions.com - Unauthenticated Stored XSS in DJ-HelpfulArticles < 1.3.0 - The “was this article helpful” voting widget posts a client-supplied ip field to its AJAX handlers (getDeny, getConfirm, getDenyReason in mod_djhelpful_articles/helper.php), reachable without authentication through com_ajax. The value was stored exactly as submitted instead of being taken from the connection by the server. It was then printed without output escaping in the administrator backend’s “Helpful articles” overview (views/items/tmpl/default.php). $db->quote() was applied on insert, which protects the SQL statement but does nothing for HTML output. There was no CSRF token, no rate limit, and the vote de-duplication keyed on the same attacker-controlled field.","summary":"The DJ-HelpfulArticles Joomla extension before 1.3.0 stores a client-supplied IP value from its unauthenticated voting widget without escaping it. The value is then rendered unescaped in the administrator backend's Helpful articles overview, so an attacker can run script in an administrator's browser.","severity":"high","cvss":8.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["dj-extensions","joomla","joomla-extensions","package","php"],"not_affected_if":["extension-not-installed","version-1.3.0-or-later","widget-not-used"],"how_to_check":"- Check the installed DJ-HelpfulArticles (mod_djhelpful_articles) version in the Joomla extensions manager and confirm whether it is below `1.3.0`\n- Look for the module's views/items/tmpl/default.php and check whether the IP or vote values are output without escaping","fix":"- Update DJ-HelpfulArticles to `1.3.0` or later\n- Until updated, disable the module or restrict com_ajax access to the voting handlers\n- Review stored vote records for script content in the IP field","status":"open","published_at":"2026-10-27T12:17:04+00:00","first_seen_at":"2026-10-27T12:31:37+00:00","triaged_at":"2026-10-27T12:32:00+00:00","updated_at":"2026-10-27T12:32:00+00:00","category":"package","confidence":0.8,"triage":{"at":"2026-10-27T12:32:00Z","model":"claude-haiku-5-5","output":{"fix":"- Update DJ-HelpfulArticles to `1.3.0` or later\n- Until updated, disable the module or restrict com_ajax access to the voting handlers\n- Review stored vote records for script content in the IP field","reach":"internet","title":"Joomla DJ-HelpfulArticles: unauthenticated stored XSS via vote widget IP field","impact":"high","summary":"The DJ-HelpfulArticles Joomla extension before 1.3.0 stores a client-supplied IP value from its unauthenticated voting widget without escaping it. The value is then rendered unescaped in the administrator backend's Helpful articles overview, so an attacker can run script in an administrator's browser.","category":"package","nicknames":[],"who_cares":["joomla","joomla-extensions","dj-extensions","php"],"confidence":0.8,"needs_auth":"no","worst_case":"Attacker script runs in administrator browsers, enabling admin account takeover","analyst_note":"","how_to_check":"- Check the installed DJ-HelpfulArticles (mod_djhelpful_articles) version in the Joomla extensions manager and confirm whether it is below `1.3.0`\n- Look for the module's views/items/tmpl/default.php and check whether the IP or vote values are output without escaping","needs_analyst":false,"not_affected_if":["extension-not-installed","version-1.3.0-or-later","widget-not-used"],"who_is_affected":"Sites running the DJ-HelpfulArticles Joomla extension below 1.3.0 with the 'was this article helpful' widget reachable on the public site. The risk lands on administrators who open the backend Helpful articles overview, since that is where the stored value is printed. Sites without this extension or on 1.3.0 or later can skip it.","user_interaction":"yes","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000674,"input_tokens":3512,"output_tokens":645,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-102800':15A,18A '-2026':14A,17A '1.3.0':35B,86C 'administr':59B,73B,144C 'ajax':103C,117C 'appli':154C 'articl':63B,90C,148C 'articles/helper.php':111C 'attack':67B,187C 'attacker-control':186C 'authent':114C 'backend':60B,145C 'browser':75B 'client':39B,97C 'client-suppli':38B,96C 'com':116C 'connect':131C 'control':188C 'csrf':171C 'cve':13A,16A 'db':151C 'de':180C 'de-dupl':179C 'dj':3A,20B,30B,84C 'dj-extens':19B 'dj-extensions.com':78C 'dj-helpfularticl':2A,29B,83C 'djhelp':110C 'duplic':181C 'escap':49B,141C 'exact':122C 'extens':21B,25B,33B,77C 'field':12A,100C,189C 'getconfirm':106C 'getdeni':105C 'getdenyreason':107C 'handler':104C 'help':62B,91C,147C 'helpfularticl':4A,31B,85C 'html':166C 'insert':156C 'instead':125C 'ip':11A,41B,99C 'joomla':1A,22B,24B,32B,76C 'joomla-extens':23B 'key':182C 'limit':175C 'mod':109C 'noth':164C 'output':140C,167C 'overview':64B,149C 'packag':26B 'php':27B 'post':94C 'print':138C 'protect':158C 'quot':152C 'rate':174C 'reachabl':112C 'render':55B 'run':69B 'script':70B 'server':134C 'sql':160C 'statement':161C 'store':6A,36B,80C,121C 'submit':124C 'suppli':40B,98C 'taken':128C 'token':172C 'unauthent':5A,45B,79C 'unescap':56B 'valu':42B,52B,119C 'via':8A 'views/items/tmpl/default.php':150C 'vote':9A,46B,92C,178C 'widget':10A,47B,93C 'without':48B,113C,139C 'xss':7A,81C","nicknames":[],"mitigations":[],"who_affected":"Sites running the DJ-HelpfulArticles Joomla extension below 1.3.0 with the 'was this article helpful' widget reachable on the public site. The risk lands on administrators who open the backend Helpful articles overview, since that is where the stored value is printed. Sites without this extension or on 1.3.0 or later can skip it.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-27T12:17:04+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/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":"security@joomla.org","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-102800","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102800","severity":null,"published_at":"2026-10-27T12:17:04+00:00","modified_at":"2026-10-27T12:17:04+00:00","first_seen_at":"2026-10-27T12:31:37+00:00","fetched_at":"2026-10-27T12:31:37+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"}