CVE-2026-35048 | The Piwigo installer in versions 16.3.0 and earlier accepts … | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2026-35048
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-03-31 21:06 UTC
Published: 2026-07-20 16:27 UTC
Last updated: 2026-07-20 17:11 UTC
Primary CWE: CWE-20
CWE-20: Improper Input Validation
Vendor / Product: Piwigo / Piwigo
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
Piwigo	Piwigo	—	<= 16.3.0

Weakness (CWE)

CWE	Source	Description
CWE-20	cna	CWE-20: Improper Input Validation

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

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