Vulnerability · Published Apr 3, 2026 · Assigned by GitHub_M
CVE-2026-27833Piwigo: Unauthenticated Information Disclosure via pwg.history.search API
High 7.5
In plain English
A high-severity missing authorization in Piwigo from Piwigo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.6% (higher than 76% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.6%top 23.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Nuclei
Official 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.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
References
- https://github.com/Piwigo/Piwigo/security/advisories/GHSA-397m-gfhm-pmg2 x_refsource_CONFIRM
- https://github.com/Piwigo/Piwigo/commit/d05c16561ce3692ca922199f8c8d7b1a45893f1c x_refsource_MISC
- https://piwigo.org/release-16.3.0 x_refsource_MISC