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Vulnerability record · CVE-2026-35048 · published 20 July 2026

CVE-2026-35048: Improper input validation vulnerability

The Piwigo installer in versions 16.3.0 and earlier accepts POST parameters for database configuration and writes them directly into a PHP configuration file without proper sanitization. On PHP 8+, the `addslashes()` protection is bypassed because it checks for `get_magic_quotes_gpc()`, a function removed in PHP 8.0. This allows raw user input to be interpolated directly into PHP source code. An unauthenticated attacker can inject arbitrary PHP code through POST parameters (prefix, dbpasswd, dbhost, dbname, or dbuser), which gets written to `local/config/database.inc.php` and executed on every page load.

9.8 CVSS 3.1 Critical EPSS 0.58% · top 54.6% CWE-20 · Improper input validation Deferred
9.8CVSS 3.1 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
21 Jul 2026Last modified by NVD

Description

The Piwigo installer in versions 16.3.0 and earlier accepts POST parameters for database configuration and writes them directly into a PHP configuration file without proper sanitization. On PHP 8+, the `addslashes()` protection is bypassed because it checks for `get_magic_quotes_gpc()`, a function removed in PHP 8.0. This allows raw user input to be interpolated directly into PHP source code. An unauthenticated attacker can inject arbitrary PHP code through POST parameters (prefix, dbpasswd, dbhost, dbname, or dbuser), which gets written to `local/config/database.inc.php` and executed on every page load.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

LinkTags
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-gphq-34pv-gvf3
https://github.com/Piwigo/Piwigo/security/advisories/GHSA-gphq-34pv-gvf3

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Source: NIST National Vulnerability Database (record CVE-2026-35048), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.