CVE-2026-27833

Piwigo: Unauthenticated Information Disclosure via pwg.history.search API

State: Published
Severity: 7.5 High
Published: Apr 3, 2026
Updated: Apr 6, 2026
Reserved: Feb 24, 2026

Description

Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, the pwg.history.search API method in Piwigo is registered without the admin_only option, allowing unauthenticated users to access the full browsing history of all gallery visitors. This issue has been patched in version 16.3.0.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
PiwigoPiwigo	< 16.3.0Affected

References

https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2
https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c
https://piwigo.org/release-16.3.0

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