---
id: CVE-2026-45229
title: Quark Drive (quark-auto-save) < 0.8.5 Mass Assignment via POST /update
summary: >-
  Quark Drive before 0.8.5 contains a mass assignment vulnerability in the POST
  /update endpoint that allows authenticated attackers to overwrite
  administrator credentials by posting an arbitrary webui object to the
  config_data dictionary.…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-915
vendor: Cp0204
product: quark-auto-save
affected:
  - quark-auto-save < 0.8.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-05-14T16:15:58.817869Z'
published: '2026-05-13'
updated: '2026-11-08'
sourceUpdated: '2026-11-08T14:03:43.442Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-45229'
references:
  - url: 'https://github.com/Cp0204/quark-auto-save/releases/tag/v0.8.5'
    label: quark-auto-save 0.8.5 Release Notes
  - url: >-
      https://github.com/Cp0204/quark-auto-save/commit/ea8377a596446291953dbe36e2d119d85bcd865b
  - url: >-
      https://www.vulncheck.com/advisories/quark-drive-mass-assignment-via-post-update
tags:
  - cve.org
epss: 0.00367
epssPercentile: 0.30753
ingestedAt: '2026-11-08T14:51:22.422Z'
---

## Overview

Quark Drive before 0.8.5 contains a mass assignment vulnerability in the POST /update endpoint that allows authenticated attackers to overwrite administrator credentials by posting an arbitrary webui object to the config_data dictionary. Attackers can exploit insufficient deny-list filtering to permanently replace stored login credentials, lock out legitimate administrators, and gain persistent access to all configured tasks, cloud tokens, and notification services.

## Affected

- `quark-auto-save < 0.8.5`

## Remediation

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