{"id":"CVE-2026-128043","kind":"vulnerability","aliases":["CVE-2026-128043"],"related":[],"title":"OpenMage magento-lts: PayPal cancel handler lets attackers cancel shoppers' orders","description":"OpenMage magento-lts before 20.19.0 and 21.0.0-beta1 before 21.0.0-beta3 contains a cross-site request forgery vulnerability in PayPal cancel and decline return handlers that trust only the checkout session without verifying the request came from PayPal. Attackers can lure a shopper into a cross-site GET to paypal/standard/cancel to cancel their recent uninvoiced order, void pending authorizations, and restore items to the cart.","summary":"OpenMage magento-lts has a cross-site request forgery flaw in its PayPal cancel and decline return handlers, which trust the checkout session without checking the request came from PayPal. An attacker who lures a shopper to a crafted link can cancel the shopper's recent uninvoiced order, void pending authorizations, and restore items to the cart.","severity":"low","cvss":3.1,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["e-commerce","magento-lts","openmage","package","paypal","php"],"not_affected_if":["fixed-version","no-paypal-standard"],"how_to_check":"- Check the installed magento-lts version in composer.json or the OpenMage package lock file, and compare it with the fixed versions below.\n- Look for the PayPal Standard module enabled in the store configuration (unknown whether a specific setting is required).","fix":"- magento-lts: upgrade to `20.19.0` or later on the 20.x line\n- magento-lts 21.x beta: upgrade to `21.0.0-beta3` or later","status":"open","published_at":"2026-11-13T10:18:09+00:00","first_seen_at":"2026-11-13T10:47:32+00:00","triaged_at":"2026-11-13T10:58:57+00:00","updated_at":"2026-11-13T10:58:57+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-11-13T10:58:57Z","model":"claude-haiku-5-5","output":{"fix":"- magento-lts: upgrade to `20.19.0` or later on the 20.x line\n- magento-lts 21.x beta: upgrade to `21.0.0-beta3` or later","reach":"internet","title":"OpenMage magento-lts: PayPal cancel handler lets attackers cancel shoppers' orders","impact":"low","summary":"OpenMage magento-lts has a cross-site request forgery flaw in its PayPal cancel and decline return handlers, which trust the checkout session without checking the request came from PayPal. An attacker who lures a shopper to a crafted link can cancel the shopper's recent uninvoiced order, void pending authorizations, and restore items to the cart.","audience":"businesses","category":"package","nicknames":[],"who_cares":["magento-lts","openmage","paypal","e-commerce","php"],"confidence":0.7,"fix_status":"available","needs_auth":"no","worst_case":"Shopper orders get cancelled and payment authorizations voided by an attacker link","analyst_note":"","how_to_check":"- Check the installed magento-lts version in composer.json or the OpenMage package lock file, and compare it with the fixed versions below.\n- Look for the PayPal Standard module enabled in the store configuration (unknown whether a specific setting is required).","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["fixed-version","no-paypal-standard"],"who_is_affected":"Stores running OpenMage magento-lts with the PayPal Standard payment method, where a shopper's session can be targeted by a crafted cross-site link. Stores on the fixed versions or without PayPal Standard are not affected. The sources do not say whether a specific setting is needed beyond the PayPal module being in use.","user_interaction":"yes","product_ecosystem":"","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000793,"input_tokens":4678,"output_tokens":650,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-128043':15A,18A '-2026':14A,17A '20.19.0':93C '21.0.0':95C,98C 'attack':9A,62B,128C 'author':81B,149C 'beta1':96C 'beta3':99C 'came':58B,125C 'cancel':6A,10A,44B,72B,110C,142C 'cart':87B,155C 'check':55B 'checkout':52B,119C 'commerc':21B 'contain':100C 'craft':69B 'cross':36B,103C,136C 'cross-sit':35B,102C,135C 'cve':13A,16A 'declin':46B,112C 'e':20B 'e-commerc':19B 'flaw':40B 'forgeri':39B,106C 'get':138C 'handler':7A,48B,114C 'item':84B,152C 'let':8A 'link':70B 'lts':4A,24B,32B,91C 'lure':64B,130C 'magento':3A,23B,31B,90C 'magento-lt':2A,22B,30B,89C 'openmag':1A,25B,29B,88C 'order':12A,78B,146C 'packag':26B 'paypal':5A,27B,43B,60B,109C,127C 'paypal/standard/cancel':140C 'pend':80B,148C 'php':28B 'recent':76B,144C 'request':38B,57B,105C,124C 'restor':83B,151C 'return':47B,113C 'session':53B,120C 'shopper':11A,66B,74B,132C 'site':37B,104C,137C 'trust':50B,116C 'uninvo':77B,145C 'verifi':122C 'void':79B,147C 'vulner':107C 'without':54B,121C","nicknames":[],"mitigations":[],"who_affected":"Stores running OpenMage magento-lts with the PayPal Standard payment method, where a shopper's session can be targeted by a crafted cross-site link. Stores on the fixed versions or without PayPal Standard are not affected. The sources do not say whether a specific setting is needed beyond the PayPal module being in use.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["ecommerce","low","magentolts","openmage","package","paypal","php"],"campaign_type":null,"search_a":"'-128043':15A,18A '-2026':14A,17A 'attack':9A 'cancel':6A,10A 'cve':13A,16A 'handler':7A 'let':8A 'lts':4A 'magento':3A 'magento-lt':2A 'openmag':1A 'order':12A 'paypal':5A 'shopper':11A","search_b":"'attack':62B 'author':81B 'came':58B 'cancel':44B,72B 'cart':87B 'check':55B 'checkout':52B 'commerc':21B 'craft':69B 'cross':36B 'cross-sit':35B 'declin':46B 'e':20B 'e-commerc':19B 'flaw':40B 'forgeri':39B 'handler':48B 'item':84B 'link':70B 'lts':24B,32B 'lure':64B 'magento':23B,31B 'magento-lt':22B,30B 'openmag':25B,29B 'order':78B 'packag':26B 'paypal':27B,43B,60B 'pend':80B 'php':28B 'recent':76B 'request':38B,57B 'restor':83B 'return':47B 'session':53B 'shopper':66B,74B 'site':37B 'trust':50B 'uninvo':77B 'void':79B 'without':54B","search_c":"'20.19.0':93C '21.0.0':95C,98C 'attack':128C 'author':149C 'beta1':96C 'beta3':99C 'came':125C 'cancel':110C,142C 'cart':155C 'checkout':119C 'contain':100C 'cross':103C,136C 'cross-sit':102C,135C 'declin':112C 'forgeri':106C 'get':138C 'handler':114C 'item':152C 'lts':91C 'lure':130C 'magento':90C 'magento-lt':89C 'openmag':88C 'order':146C 'paypal':109C,127C 'paypal/standard/cancel':140C 'pend':148C 'recent':144C 'request':105C,124C 'restor':151C 'return':113C 'session':120C 'shopper':132C 'site':104C,137C 'trust':116C 'uninvo':145C 'verifi':122C 'void':147C 'vulner':107C 'without':121C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-10-26T19:59:29+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:N/VI:L/VA:N/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":"disclosure@vulncheck.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-128043","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-128043","severity":null,"published_at":"2026-11-13T10:18:09+00:00","modified_at":"2026-11-13T10:18:09+00:00","first_seen_at":"2026-11-13T10:47:32+00:00","fetched_at":"2026-11-13T10:47:32+00:00","note":null}],"documents":[{"id":145390,"url":"https://github.com/OpenMage/magento-lts/commit/86c8895d586db61ac7d093ba4e473103a30882c8","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":145391,"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-2jfg-wx75-5cc8","title":"Vendor advisory: github.com","kind":"vendor","source":"nvd","publisher":"vendor","text":null,"published_at":"2026-10-26T19:59:29+00:00","relation":"advisory","confidence":null,"note":"Vendor advisory: github.com"},{"id":145392,"url":"https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-csrf-via-paypal-cancel-return-handlers","title":"Third-party advisory: www.vulncheck.com","kind":"advisory","source":"nvd","publisher":"research","text":null,"published_at":null,"relation":"advisory","confidence":null,"note":"Third-party advisory: www.vulncheck.com"}],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}