---
id: CVE-2026-67993
title: >-
  basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f contains a
  login cross-site request forgery issue in the static credentials callback.
summary: >-
  basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f contains a
  login cross-site request forgery issue in the static credentials callback.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-352
published: '2026-09-29'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T20:17:34.270'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-67993'
references:
  - url: 'https://github.com/basecamp/upright'
    label: cve@mitre.org
  - url: >-
      https://github.com/basecamp/upright/blob/efe4f2e5254ac6e57e45d2261804cca74dbbca3f/app/controllers/upright/sessions_controller.rb#L3
    label: cve@mitre.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-30T19:43:22.615606Z'
epss: 0.00155
epssPercentile: 0.0402
ingestedAt: '2026-09-29T20:46:06.446Z'
---

## Overview

basecamp/upright at commit efe4f2e5254ac6e57e45d2261804cca74dbbca3f contains a login cross-site request forgery issue in the static credentials callback.

## Remediation

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