Observable Response Discrepancy in Piwigo - CVE-2025-62512
Published: April 25, 2026 / Updated: April 26, 2026
Vulnerability identifier: #VU127940
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-2025-62512
CWE-ID: CWE-204
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Piwigo.org
Affected software:
Piwigo
Piwigo
Detailed vulnerability description
The vulnerability allows a remote attacker to disclose valid usernames or email addresses.
The vulnerability exists due to observable response discrepancy in the password reset endpoint when handling password reset requests. A remote attacker can send a specially crafted request with a username or email address to disclose valid usernames or email addresses.
The endpoint returns distinct messages for existing and non-existent accounts.
How to mitigate CVE-2025-62512
Install security update from vendor's website.