{"id":"CVE-2026-103301","kind":"vulnerability","aliases":["CVE-2026-103301"],"related":[],"title":"Telcell WordPress payment plugin accepts forged payment notifications, marking orders paid","description":"The Payment Gateway for Telcell WordPress plugin before 2.0.5 does not verify the authenticity of incoming payment notifications, because the secret used to sign them is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary WooCommerce orders as paid. The same handler also marks an attacker-chosen order as failed when given an invalid signature.","summary":"The Payment Gateway for Telcell WordPress plugin before 2.0.5 does not verify payment notifications because its signing secret is empty by default. An unauthenticated attacker can forge a notification and mark any WooCommerce order as paid, or mark an order as failed.","severity":"medium","cvss":5.3,"epss":0.00114,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","payments","telcell","woocommerce","wordpress"],"not_affected_if":["plugin-2.0.5-or-later","telcell-gateway-not-installed"],"how_to_check":"- Check the installed version of the Payment Gateway for Telcell plugin in the WordPress admin under Plugins, or with `wp plugin get <plugin-slug> --field=version`.\n- Check whether the plugin's signing secret setting is empty in the Telcell gateway settings.","fix":"- Update the Payment Gateway for Telcell WordPress plugin to `2.0.5` or later.\n- Set a non-empty signing secret in the gateway settings.","status":"open","published_at":"2026-10-21T09:17:05+00:00","first_seen_at":"2026-10-23T21:57:28+00:00","triaged_at":"2026-10-25T04:21:05+00:00","updated_at":"2026-10-25T04:21:05+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:21:05Z","model":"claude-haiku-5-5","output":{"fix":"- Update the Payment Gateway for Telcell WordPress plugin to `2.0.5` or later.\n- Set a non-empty signing secret in the gateway settings.","reach":"internet","title":"Telcell WordPress payment plugin accepts forged payment notifications, marking orders paid","impact":"medium","summary":"The Payment Gateway for Telcell WordPress plugin before 2.0.5 does not verify payment notifications because its signing secret is empty by default. An unauthenticated attacker can forge a notification and mark any WooCommerce order as paid, or mark an order as failed.","category":"package","nicknames":[],"who_cares":["wordpress","woocommerce","telcell","payments"],"confidence":0.7,"needs_auth":"no","worst_case":"Attacker marks arbitrary WooCommerce orders as paid without paying.","analyst_note":"Confirm the default signing secret behaviour and the exact fixed version in the NVD entry or plugin changelog; the sources only say 'before 2.0.5'.","how_to_check":"- Check the installed version of the Payment Gateway for Telcell plugin in the WordPress admin under Plugins, or with `wp plugin get <plugin-slug> --field=version`.\n- Check whether the plugin's signing secret setting is empty in the Telcell gateway settings.","needs_analyst":true,"not_affected_if":["plugin-2.0.5-or-later","telcell-gateway-not-installed"],"who_is_affected":"WordPress sites running the Payment Gateway for Telcell plugin before 2.0.5 with WooCommerce orders, especially where the signing secret was never set. Sites that do not use the Telcell gateway can skip it.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"medium"},"cost_usd":0.000651,"input_tokens":3394,"output_tokens":623,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-103301':14A,17A '-2026':13A,16A '2.0.5':31B,73C 'accept':5A 'allow':94C 'also':112C 'arbitrari':104C 'attack':47B,96C,116C 'attacker-chosen':115C 'authent':78C 'chosen':117C 'cve':12A,15A 'default':44B,93C 'empti':42B,91C 'fail':64B,120C 'forg':6A,49B,98C 'gateway':25B,67C 'given':122C 'handler':111C 'incom':80C 'invalid':124C 'mark':9A,53B,60B,103C,113C 'notif':8A,36B,51B,82C,101C 'order':10A,56B,62B,106C,118C 'packag':18B 'paid':11A,58B,108C 'payment':3A,7A,19B,24B,35B,66C,81C 'plugin':4A,29B,71C 'secret':40B,85C 'sign':39B,88C 'signatur':125C 'telcel':1A,20B,27B,69C 'unauthent':46B,95C 'use':86C 'valid':100C 'verifi':34B,76C 'woocommerc':21B,55B,105C 'wordpress':2A,22B,28B,70C","nicknames":[],"mitigations":[],"who_affected":"WordPress sites running the Payment Gateway for Telcell plugin before 2.0.5 with WooCommerce orders, especially where the signing secret was never set. Sites that do not use the Telcell gateway can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-21T09:17:05+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvss_by":"contact@wpscan.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-103301","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103301","severity":null,"published_at":"2026-10-21T09:17:05+00:00","modified_at":"2026-10-21T18:37:38+00:00","first_seen_at":"2026-10-23T21:57:28+00:00","fetched_at":"2026-10-23T22:29:01+00:00","note":null},{"source":"epss","external_id":"CVE-2026-103301","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-103301","severity":null,"published_at":null,"modified_at":null,"first_seen_at":"2026-10-24T13:15:54+00:00","fetched_at":"2026-10-24T13:15:54+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"}