CVE-2026-27834 Piwigo: SQL Injection in pwg.users.getList API Method via filter Parameter

What is CVE-2026-27834?

CVE-2026-27834 is a high-severity SQL injection vulnerability in Piwigo Piwigo, published on 3 Apr 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, a SQL Injection vulnerability exists in the pwg.users.getList Web Service API method. The filter parameter is directly concatenated into a SQL query without proper sanitization, allowing authenticated administrators to execute arbitrary SQL commands. This issue has been patched in version 16.3.0.

Weakness: CWE-89

Which versions are affected by CVE-2026-27834?

It affects 1 product.

Products include Piwigo Piwigo.

How do I fix CVE-2026-27834?

No fix has been published for CVE-2026-27834 yet. Limit exposure of the affected software until one is available.

Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.

Is CVE-2026-27834 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27834 exists.

Other vulnerabilities in Piwigo Piwigo

• CVE-2014-4648 Unspecified vulnerability in Piwigo before 2.6.3 has unknown impact and attack vectors, related to a "security failure." Critical 10.0
• CVE-2023-33361 SQL injection in n/a Critical 9.8
• CVE-2023-33362 SQL injection in n/a Critical 9.8
• CVE-2020-19213 SQL injection in n/a Critical 9.8
• CVE-2021-32615 SQL injection in n/a Critical 9.8

All Piwigo Piwigo vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-5jwg-cr5q-vjq2.