{"id":"CVE-2026-54858","kind":"vulnerability","aliases":["CVE-2026-54858"],"related":[],"title":"Printy WordPress plugin: unauthenticated PHP object injection up to 1.13.0","description":"Unauthenticated PHP Object Injection in Printy <= 1.13.0 versions.","summary":"Printy versions up to 1.13.0 accept attacker-supplied serialized PHP data without authentication. A remote attacker can use PHP object injection to potentially run code or reach sensitive data on the server.","severity":"critical","cvss":9.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","php","printy","wordpress"],"not_affected_if":["plugin-not-installed","version-above-1.13.0"],"how_to_check":"- Check the installed Printy version in the plugin list or the plugin's main file header; versions `1.13.0` and older are listed as affected.","fix":"- Move Printy past `1.13.0`; the sources do not name the fixed version.","status":"open","published_at":"2026-10-29T16:18:09+00:00","first_seen_at":"2026-10-29T16:25:59+00:00","triaged_at":"2026-10-29T16:27:40+00:00","updated_at":"2026-10-29T16:27:40+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-10-29T16:27:40Z","model":"claude-haiku-5-5","output":{"fix":"- Move Printy past `1.13.0`; the sources do not name the fixed version.","reach":"internet","title":"Printy WordPress plugin: unauthenticated PHP object injection up to 1.13.0","impact":"high","summary":"Printy versions up to 1.13.0 accept attacker-supplied serialized PHP data without authentication. A remote attacker can use PHP object injection to potentially run code or reach sensitive data on the server.","audience":"businesses","category":"package","nicknames":[],"who_cares":["wordpress","printy","php"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Attacker runs code or reads secrets on the server","analyst_note":"Confirm the fixed Printy version and the vulnerable endpoint from the NVD entry (https://nvd.nist.gov/vuln/detail/CVE-2026-54858) or the vendor's plugin page.","how_to_check":"- Check the installed Printy version in the plugin list or the plugin's main file header; versions `1.13.0` and older are listed as affected.\n- unknown for other checks, since the sources do not describe the vulnerable endpoint or setting.","plain_action":"","needs_analyst":true,"not_affected_if":["plugin-not-installed","version-above-1.13.0"],"who_is_affected":"Sites running the Printy plugin at version 1.13.0 or older are exposed. The sources do not say which endpoint is involved or whether any non-default setting is required, and do not say whether a fixed release exists.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.000688,"input_tokens":4049,"output_tokens":567,"severity_before":"critical"},"analyst_status":null,"analyst_note":null,"search":"'-2026':12A,15A '-54858':13A,16A '1.13.0':10A,25B,60C 'accept':26B 'attack':28B,37B 'attacker-suppli':27B 'authent':34B 'code':46B 'cve':11A,14A 'data':32B,50B 'inject':7A,42B,57C 'object':6A,41B,56C 'packag':17B 'php':5A,18B,31B,40B,55C 'plugin':3A 'potenti':44B 'printi':1A,19B,21B,59C 'reach':48B 'remot':36B 'run':45B 'sensit':49B 'serial':30B 'server':53B 'suppli':29B 'unauthent':4A,54C 'use':39B 'version':22B,61C 'without':33B 'wordpress':2A,20B","nicknames":[],"mitigations":[],"who_affected":"Sites running the Printy plugin at version 1.13.0 or older are exposed. The sources do not say which endpoint is involved or whether any non-default setting is required, and do not say whether a fixed release exists.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"first_public_at":"2026-10-29T16:18:09+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/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-2026-54858","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54858","severity":null,"published_at":"2026-10-29T16:18:09+00:00","modified_at":"2026-10-29T16:20:19+00:00","first_seen_at":"2026-10-29T16:25:59+00:00","fetched_at":"2026-10-29T16:25:59+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"}