Missing Authorization in Piwigo - CVE-2026-27833
Published: April 25, 2026 / Updated: April 26, 2026
Vulnerability identifier: #VU127942
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-27833
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to missing authorization in the pwg.history.search API method when handling requests to the web service endpoint. A remote attacker can send a specially crafted request to disclose sensitive information.
Only instances with web services enabled are vulnerable.
Affected software
Piwigo
How to mitigate CVE-2026-27833
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.