{"id":"CVE-2026-121628","kind":"vulnerability","aliases":["CVE-2026-121628"],"related":[],"title":"Bagisto: race condition lets shoppers reuse single-use coupons repeatedly","description":"Bagisto before 2.3.16 and 2.4.x before 2.4.1 contains a race condition vulnerability in manageCartRule() that allows attackers to redeem single-use coupons multiple times. Attackers can submit concurrent order requests to the onepage orders checkout endpoint, bypassing unlocked times_used checks to apply discounts repeatedly.","summary":"Bagisto, an open-source Laravel e-commerce platform, has a race condition in its cart rule handling where concurrent checkout requests bypass the times_used check. An attacker can apply a single-use coupon multiple times and get repeated discounts.","severity":"medium","cvss":6.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["bagisto","e-commerce","laravel","package","self-hosted"],"not_affected_if":["no-single-use-coupons"],"how_to_check":"- Check the installed Bagisto version in composer.lock or the project's composer.json for `bagisto/bagisto`\n- Compare the version against `2.3.16` for the 2.3.x line and `2.4.1` for the 2.4.x line","fix":"- Bagisto 2.3.x: move to `2.3.16` or later\n- Bagisto 2.4.x: move to `2.4.1` or later","status":"open","published_at":"2026-11-03T18:17:58+00:00","first_seen_at":"2026-11-03T18:22:10+00:00","triaged_at":"2026-11-03T18:22:37+00:00","updated_at":"2026-11-03T18:22:37+00:00","category":"package","confidence":0.6,"triage":{"at":"2026-11-03T18:22:37Z","model":"claude-haiku-5-5","output":{"fix":"- Bagisto 2.3.x: move to `2.3.16` or later\n- Bagisto 2.4.x: move to `2.4.1` or later","reach":"internet","title":"Bagisto: race condition lets shoppers reuse single-use coupons repeatedly","impact":"low","summary":"Bagisto, an open-source Laravel e-commerce platform, has a race condition in its cart rule handling where concurrent checkout requests bypass the times_used check. An attacker can apply a single-use coupon multiple times and get repeated discounts.","audience":"businesses","category":"package","nicknames":[],"who_cares":["bagisto","laravel","e-commerce","self-hosted"],"confidence":0.6,"fix_status":"available","needs_auth":"unknown","worst_case":"Customers redeem single-use discounts many times, causing revenue loss","analyst_note":"Confirm whether checkout requires login and whether the fix commit is in the linked GitHub patch and release notes.","how_to_check":"- Check the installed Bagisto version in composer.lock or the project's composer.json for `bagisto/bagisto`\n- Compare the version against `2.3.16` for the 2.3.x line and `2.4.1` for the 2.4.x line","plain_action":"","needs_analyst":true,"not_affected_if":["no-single-use-coupons"],"who_is_affected":"Stores running Bagisto versions before 2.3.16 or 2.4.x before 2.4.1 that offer single-use coupons are exposed, since the flaw is in the onepage checkout order endpoint. Stores on managed hosting that does not expose the Bagisto code path, or with no single-use cart rules, have lower exposure. Sources do not say whether authentication is required to reach the endpoint.","user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000745,"input_tokens":4236,"output_tokens":643,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-121628':14A,17A '-2026':13A,16A '2.3.16':72C '2.4':74C '2.4.1':77C 'allow':86C 'appli':58B,114C 'attack':56B,87C,96C 'bagisto':1A,18B,27B,70C 'bypass':50B,108C 'cart':43B 'check':54B,112C 'checkout':48B,106C 'commerc':21B,35B 'concurr':47B,99C 'condit':3A,40B,81C 'contain':78C 'coupon':10A,63B,93C 'cve':12A,15A 'discount':69B,115C 'e':20B,34B 'e-commerc':19B,33B 'endpoint':107C 'get':67B 'handl':45B 'host':26B 'laravel':22B,32B 'let':4A 'managecartrul':84C 'multipl':64B,94C 'onepag':104C 'open':30B 'open-sourc':29B 'order':100C,105C 'packag':23B 'platform':36B 'race':2A,39B,80C 'redeem':89C 'repeat':11A,68B,116C 'request':49B,101C 'reus':6A 'rule':44B 'self':25B 'self-host':24B 'shopper':5A 'singl':8A,61B,91C 'single-us':7A,60B,90C 'sourc':31B 'submit':98C 'time':52B,65B,95C,110C 'unlock':109C 'use':9A,53B,62B,92C,111C 'vulner':82C 'x':75C","nicknames":[],"mitigations":[],"who_affected":"Stores running Bagisto versions before 2.3.16 or 2.4.x before 2.4.1 that offer single-use coupons are exposed, since the flaw is in the onepage checkout order endpoint. Stores on managed hosting that does not expose the Bagisto code path, or with no single-use cart rules, have lower exposure. Sources do not say whether authentication is required to reach the endpoint.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["bagisto","ecommerce","laravel","medium","package","selfhosted"],"campaign_type":null,"first_public_at":"2026-11-03T18:17:58+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/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-2026-121628","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-121628","severity":null,"published_at":"2026-11-03T18:17:58+00:00","modified_at":"2026-11-03T18:17:58+00:00","first_seen_at":"2026-11-03T18:22:10+00:00","fetched_at":"2026-11-03T18:22:10+00:00","note":null}],"documents":[{"id":59650,"url":"https://github.com/bagisto/bagisto/commit/1f57c10eb9cb61b37de4706ffa439fd26aa7c405","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":59651,"url":"https://github.com/bagisto/bagisto/commit/81cb2a2a35b355492f704fd216d679f2145a5650","title":"Patch: github.com","kind":"other","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Patch: github.com"},{"id":59652,"url":"https://github.com/bagisto/bagisto/releases/tag/v2.3.16","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"},{"id":59653,"url":"https://github.com/bagisto/bagisto/releases/tag/v2.4.1","title":"Release notes: github.com","kind":"release","source":"nvd","publisher":"vendor","text":null,"published_at":null,"relation":"fix","confidence":null,"note":"Release notes: github.com"},{"id":59654,"url":"https://www.vulncheck.com/advisories/bagisto-before-2.3.16-and-2.4-x-before-2.4.1-race-condition-in-coupon-usage-accounting","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"}],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}