CVE-2026-45229

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.

CVSS 4.0

8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS 3.1

8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.4% chance of exploitation in the next 30 days; higher than 30% of CVEs (scores of 2026-10-25)

CWE

CWE-915

Published

2026-05-13

Modified

2026-10-26

Record from

the NVD, synced 2026-10-26

References

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

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