{"id":"CVE-2026-112852","kind":"vulnerability","aliases":["CVE-2026-112852"],"related":[],"title":"Helion WordPress theme: untrusted data deserialization allows object injection","description":"Deserialization of Untrusted Data vulnerability in ThemeREX Group Helion helion allows Object Injection.This issue affects Helion: from n/a through 1.1.12.","summary":"The ThemeREX Helion theme deserializes untrusted input, which lets an attacker inject PHP objects. Sources do not say what code path or what an attacker can do after injection.","severity":"high","cvss":8.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["helion","package","themes","wordpress"],"not_affected_if":["theme-not-installed"],"how_to_check":"- Check the installed Helion theme version in the theme stylesheet header or WordPress admin under Appearance > Themes\n- unknown whether other checks apply","fix":"- Move Helion to a version later than `1.1.12`\n- unknown whether a patched version exists or what the vendor advises","status":"open","published_at":"2026-10-23T13:17:06+00:00","first_seen_at":"2026-10-23T21:57:33+00:00","triaged_at":"2026-10-25T03:04:34+00:00","updated_at":"2026-10-25T03:04:34+00:00","category":"package","confidence":0.5,"triage":{"at":"2026-10-25T03:04:34Z","model":"claude-haiku-5-5","output":{"fix":"- Move Helion to a version later than `1.1.12`\n- unknown whether a patched version exists or what the vendor advises","reach":"internet","title":"Helion WordPress theme: untrusted data deserialization allows object injection","impact":"high","summary":"The ThemeREX Helion theme deserializes untrusted input, which lets an attacker inject PHP objects. Sources do not say what code path or what an attacker can do after injection.","category":"package","nicknames":[],"who_cares":["wordpress","themes","helion"],"confidence":0.5,"needs_auth":"unknown","worst_case":"Attacker may inject objects, possibly running code on the server","analyst_note":"Find the advisory or vendor changelog for Helion to confirm the fixed version, the trigger path, and whether auth is required.","how_to_check":"- Check the installed Helion theme version in the theme stylesheet header or WordPress admin under Appearance > Themes\n- unknown whether other checks apply","needs_analyst":true,"not_affected_if":["theme-not-installed"],"who_is_affected":"Sites running the Helion theme from ThemeREX at version `1.1.12` or earlier are affected. Sites that do not use this theme can skip it. The sources do not say whether the flaw needs a logged-in user or a particular setting.","user_interaction":"unknown","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000572,"input_tokens":3284,"output_tokens":487,"severity_before":"high"},"analyst_status":null,"analyst_note":null,"search":"'-112852':12A,15A '-2026':11A,14A '1.1.12':68C 'affect':63C 'allow':7A,59C 'attack':30B,44B 'code':39B 'cve':10A,13A 'data':5A,52C 'deseri':6A,24B,49C 'group':56C 'helion':1A,16B,22B,57C,58C,64C 'inject':9A,31B,48B 'injection.this':61C 'input':26B 'issu':62C 'let':28B 'n/a':66C 'object':8A,33B,60C 'packag':17B 'path':40B 'php':32B 'say':37B 'sourc':34B 'theme':3A,18B,23B 'themerex':21B,55C 'untrust':4A,25B,51C 'vulner':53C 'wordpress':2A,19B","nicknames":[],"mitigations":[],"who_affected":"Sites running the Helion theme from ThemeREX at version `1.1.12` or earlier are affected. Sites that do not use this theme can skip it. The sources do not say whether the flaw needs a logged-in user or a particular setting.","tier":"B","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-23T13:17:06+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_by":"audit@patchstack.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-112852","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112852","severity":null,"published_at":"2026-10-23T13:17:06+00:00","modified_at":"2026-10-23T16:06:31+00:00","first_seen_at":"2026-10-23T21:57:33+00:00","fetched_at":"2026-10-23T22:29:03+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"}