---
id: CVE-2026-110772
title: >-
  Sure 0.7.0 through 0.7.6-alpha.6 contains a missing authorization
  vulnerability in Transactions::BulkUpdatesController#create that allows family
  members to bypass account sharing permissions
summary: >-
  Sure 0.7.0 through 0.7.6-alpha.6 contains a missing authorization
  vulnerability in Transactions::BulkUpdatesController#create that allows family
  members to bypass account sharing permissions. Authenticated members with
  read_only or no sh…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: we-promise
product: sure
affected:
  - sure >= 0.7.0 <= 0.7.6-alpha.6
published: '2026-10-14'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T14:47:05.720'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-110772'
references:
  - url: 'https://github.com/we-promise/sure'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/we-promise/sure/blob/a3bb5d991f9b96e335e9212b1a6324289577f143/app/controllers/transactions/bulk_updates_controller.rb#L5-L13
    label: disclosure@vulncheck.com
  - url: 'https://github.com/we-promise/sure/issues/2099'
    label: disclosure@vulncheck.com
  - url: >-
      https://hackmd.io/@hieuPenguinnn/we-promise-sure-transactions-bulk-update-missing-authz
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sure-0.7.0-through-0.7.6-alpha.6-missing-authorization-via-transaction-bulk-update
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-14T19:52:49.185810Z'
ingestedAt: '2026-10-14T19:49:57.612Z'
epss: 0.00266
epssPercentile: 0.18437
---

## Overview

Sure 0.7.0 through 0.7.6-alpha.6 contains a missing authorization vulnerability in Transactions::BulkUpdatesController#create that allows family members to bypass account sharing permissions. Authenticated members with read_only or no share can submit arbitrary entry_ids to modify other members' transaction dates, names, notes, categories, merchants and tags, corrupting budgets and reports.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.