{"id":"CVE-2026-110034","kind":"vulnerability","aliases":["CVE-2026-110034"],"related":[],"title":"Salon Booking System WordPress plugin: negative booking totals via discount code","description":"The Salon Booking System WordPress plugin before 10.31.11 does not enforce a minimum of zero when subtracting a fixed-amount discount from a booking's total, allowing an unauthenticated visitor who knows a valid discount code to create a confirmed booking stored with a negative total.","summary":"The Salon Booking System WordPress plugin before 10.31.11 does not stop a fixed-amount discount from pushing a booking's total below zero. An unauthenticated visitor who knows a valid discount code can create a confirmed booking stored with a negative total.","severity":"low","cvss":3.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["package","salon-booking-system","self-hosted","wordpress"],"not_affected_if":["no-fixed-amount-discounts","plugin-version-10.31.11-or-later"],"how_to_check":"- Check the installed plugin version in the WordPress admin plugin list or in the plugin header of `wp-content/plugins/salon-booking-system/`; versions below `10.31.11` are affected.\n- Review bookings for negative totals if fixed-amount discount codes are in use.","fix":"- Update the Salon Booking System plugin to `10.31.11` or later.","status":"open","published_at":"2026-10-19T07:16:30+00:00","first_seen_at":"2026-10-23T21:57:17+00:00","triaged_at":"2026-10-25T04:45:15+00:00","updated_at":"2026-10-25T04:45:15+00:00","category":"package","confidence":0.7,"triage":{"at":"2026-10-25T04:45:15Z","model":"claude-haiku-5-5","output":{"fix":"- Update the Salon Booking System plugin to `10.31.11` or later.","reach":"internet","title":"Salon Booking System WordPress plugin: negative booking totals via discount code","impact":"low","summary":"The Salon Booking System WordPress plugin before 10.31.11 does not stop a fixed-amount discount from pushing a booking's total below zero. An unauthenticated visitor who knows a valid discount code can create a confirmed booking stored with a negative total.","category":"package","nicknames":[],"who_cares":["wordpress","salon-booking-system","self-hosted"],"confidence":0.7,"needs_auth":"no","worst_case":"Bookings are confirmed with negative totals, causing revenue loss.","analyst_note":"","how_to_check":"- Check the installed plugin version in the WordPress admin plugin list or in the plugin header of `wp-content/plugins/salon-booking-system/`; versions below `10.31.11` are affected.\n- Review bookings for negative totals if fixed-amount discount codes are in use.","needs_analyst":false,"not_affected_if":["plugin-version-10.31.11-or-later","no-fixed-amount-discounts"],"who_is_affected":"Sites running the Salon Booking System WordPress plugin before `10.31.11` that accept online bookings and have fixed-amount discount codes. The flaw affects the booking total calculation, so the impact is on pricing and payment records rather than server access. Sites without the plugin or without fixed-amount discount codes can skip it.","user_interaction":"no","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000611,"input_tokens":3316,"output_tokens":558,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-110034':14A,17A '-2026':13A,16A '10.31.11':34B,77C 'allow':97C 'amount':41B,90C 'book':2A,7A,21B,29B,46B,64B,72C,94C,111C 'code':11A,59B,106C 'confirm':63B,110C 'creat':61B,108C 'cve':12A,15A 'discount':10A,42B,58B,91C,105C 'enforc':80C 'fix':40B,89C 'fixed-amount':39B,88C 'host':25B 'know':55B,102C 'minimum':82C 'negat':6A,68B,115C 'packag':18B 'plugin':5A,32B,75C 'push':44B 'salon':1A,20B,28B,71C 'salon-booking-system':19B 'self':24B 'self-host':23B 'stop':37B 'store':65B,112C 'subtract':86C 'system':3A,22B,30B,73C 'total':8A,48B,69B,96C,116C 'unauthent':52B,99C 'valid':57B,104C 'via':9A 'visitor':53B,100C 'wordpress':4A,26B,31B,74C 'zero':50B,84C","nicknames":[],"mitigations":[],"who_affected":"Sites running the Salon Booking System WordPress plugin before `10.31.11` that accept online bookings and have fixed-amount discount codes. The flaw affects the booking total calculation, so the impact is on pricing and payment records rather than server access. Sites without the plugin or without fixed-amount discount codes can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"first_public_at":"2026-10-19T07:16:30+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:H/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-2026-110034","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-110034","severity":null,"published_at":"2026-10-19T07:16:30+00:00","modified_at":"2026-10-19T21:02:51+00:00","first_seen_at":"2026-10-23T21:57:17+00:00","fetched_at":"2026-10-23T22:28:56+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"}