CVE-2026-44642: SQL Injection (CVSS 8.1)

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.

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CVSS v3.1 Score

8.1

HIGH

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

EPSS — Exploit Prediction

0.0129

Probability of exploitation

0.69%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-89 SQL Injection

References

Other References

https://github.com/Piwigo/Piwigo/commit/1ff9d04534feb5f8f3cc2d3613c0fe8b51a1c0ba https://github.com/Piwigo/Piwigo/commit/2cfa7a3d194c8b95edde43038d8f5be5a359e785 https://github.com/Piwigo/Piwigo/releases/tag/16.4.0 https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm https://github.com/Piwigo/Piwigo/security/advisories/GHSA-6wj3-7fhw-gfpm

Frequently Asked Questions

What is CVE-2026-44642? +

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. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2026-44642? +

CVE-2026-44642 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0129, placing it in the 1th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-44642? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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