Observable Response Discrepancy in Pimcore - CVE-2021-39189
Published: September 15, 2021 / Updated: June 12, 2026
Vulnerability identifier: #VU134425
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-39189
CWE-ID: CWE-204
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Pimcore
Affected software:
Pimcore
Pimcore
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to observable response discrepancy in forgot password functionality when handling password reset requests. A remote attacker can submit password reset requests for different usernames to disclose sensitive information.
How to mitigate CVE-2021-39189
Install security update from vendor's website.