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CVE-2026-44642— Piwigo: SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+)

Quick assessment

Affected
Piwigo Piwigo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Piwigo 是一款功能完整的开源 Web 照片画廊应用程序。在 16.4.0 版本之前，admin/include/functions_upgrade.php 中的 check_upgrade_access_rights() 函数仅在已移除 get_magic_quotes_gpc 函数的条件下对提交的用户名进行转义处理。因此，在 PHP 8 及更高版本中，未经身份验证的用户名会被直接拼接到升级认证 SQL 查询语句中。当存在待处理的数据库升级任务时，构造的查询结果可以满足状态和密码检查，并设置 PHPWG_IN

CVSS 8.1 · High EPSS 1.29% · P69

Affected Version Matrix 1

VendorProduct Version RangeStatus
Piwigo Piwigo < 16.4.0 affected
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I. Basic Information for CVE-2026-44642

Vulnerability Information
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Vulnerability Title
Piwigo: SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+)
Source: CVE Program / CVE List V5
Vulnerability Description
Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_access_rights() in admin/include/functions_upgrade.php conditionally escapes the submitted username only when the removed get_magic_quotes_gpc function exists, so PHP 8 and later concatenate an unauthenticated username directly into the upgrade authentication SQL query. When database upgrades are pending, a crafted query result can satisfy the status and password checks, set PHPWG_IN_UPGRADE, and authorize upgrade execution without valid administrator credentials. This can cause unauthorized database integrity changes and service disruption. This vulnerability is fixed in 16.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
SQL命令中使用的特殊元素转义处理不恰当(SQL注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Piwigo Piwigo < 16.4.0 -

II. Public POCs for CVE-2026-44642

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III. Intelligence Information for CVE-2026-44642

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Patches & Fixes for CVE-2026-44642 (2)

Vendor Advisories for CVE-2026-44642 (1)

Other References for CVE-2026-44642 (1)

Same Patch Batch · Piwigo · 2026-09-25 · 6 CVEs total

CVE-2026-42322 9.1 CRITICAL Piwigo: Authenticated RCE via File Upload in Logo Upload Feature
CVE-2026-62262 9.1 CRITICAL Piwigo: Unauthenticated SQL injection in `pwg.images.filteredSearch.create`
CVE-2026-42324 7.2 HIGH Piwigo: Second-Order SQL Injection
CVE-2026-42323 7.2 HIGH Piwigo: SQL Injection in Batch Manager
CVE-2026-85750 7.2 HIGH Piwigo arbitrary file read and remote code execution via insecure image processing

IV. Related Vulnerabilities

Same product: Piwigo
Same vendor: Piwigo
Same weakness: CWE-89

V. Comments for CVE-2026-44642

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