CVE-2026-27833
Piwigo: Unauthenticated Information Disclosure via pwg.history.search API
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.
INFO
Published Date :
April 3, 2026, 10:16 p.m.
Last Modified :
April 9, 2026, 9:14 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE |
Solution
- Update Piwigo to version 16.3.0 or newer.
- Verify the API access controls are properly configured.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-27833.
| URL | Resource |
|---|---|
| https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c | Patch |
| https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2 | Exploit Vendor Advisory |
| https://piwigo.org/release-16.3.0 | Release Notes |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-27833 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-27833
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-27833 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-27833 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 09, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:piwigo:piwigo:*:*:*:*:*:*:*:* versions up to (excluding) 16.3.0 Added Reference Type GitHub, Inc.: https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c Types: Patch Added Reference Type GitHub, Inc.: https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2 Types: Exploit, Vendor Advisory Added Reference Type GitHub, Inc.: https://piwigo.org/release-16.3.0 Types: Release Notes -
New CVE Received by [email protected]
Apr. 03, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-862 Added Reference https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c Added Reference https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2 Added Reference https://piwigo.org/release-16.3.0