CVE-2026-423229.1CriticalCWE-434

CVE-2026-42322: Piwigo: Authenticated RCE via File Upload in Logo Upload Feature

Piwigo

Affected: Piwigo · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.3%probability of exploitation in the next 30 days

70th percentile

050100

Higher than 70% of scored CVEs

9.1CriticalCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, admin/themes_standard_pages.php validates uploaded logo content by MIME type but reuses the attacker-controlled extension from std_pgs_logo when constructing the stored filename. An authenticated administrator can upload image content with a server-executable final extension, causing the file to be placed in the web-accessible logo directory and executed when requested if the web server handles that extension. This can permit arbitrary command execution, data disclosure, modification, persistence, and service disruption. This vulnerability is fixed in 16.4.0.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Piwigo · Piwigo< 16.4.0

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Unrestricted File Upload · File and Path Handling
Vendor: Piwigo
Published: September 2026
Band: Possible (1 to 10%), September 2026

CoverageNo articles yet

No CyberSIXT article names CVE-2026-42322 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.