Piwigo: SQL injection in upgrade authentication allows unauthenticated upgrade authorization bypass (PHP 8+)

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-44642
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-25 16:17:25 UTC
Updated2026-09-25 17:17:08 UTC
DescriptionPiwigo 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.

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

EPSS: 0.012850000 probability, percentile 0.689550000 (date 2026-09-27)

Problem Types: CWE-89 | CWE-89 CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNADECLARED8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Piwigo Piwigo affected < 16.4.0 Not specified

References

ReferenceSourceLinkTags
github.com/Piwigo/Piwigo/commit/2cfa7a3d194c8b95edde43038d8f5be5a359e785 [email protected] github.com
github.com/Piwigo/Piwigo/commit/1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba [email protected] github.com
github.com/Piwigo/Piwigo/releases/tag/16.4.0 [email protected] github.com
github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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