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    CVE-2026-42322

    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.

    Published:Sep 25, 2026
    Last Modified:Sep 28, 2026
    EPS:Sep 25, 2026
    EPSS Score:0.00528
    CVSS Score:9.1

    Affected Products

    Vendor
    Piwigo
    Product
    Piwigo

    Exploits

    https://github.com/LipeOzyy/CVE-2026-42322

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs

    Related CVEs

    CVE-2026-42324 (CVSS 7.2) — Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, admin/element_se…
    CVE-2026-44642 (CVSS 8.1) — Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, check_upgrade_ac…
    CVE-2026-62262 (CVSS 9.1) — Piwigo is a full featured open source photo gallery application for the web. In 17.0.0beta1 and earlier, when …
    CVE-2026-42323 (CVSS 7.2) — Piwigo is a full featured open source photo gallery application for the web. Prior to 16.4.0, admin/batch_mana…
    CVE-2026-85750 (CVSS 7.2) — Piwigo before v16.4.0 is vulnerable to arbitrary file read and remote code execution in image upload handling …
    CVE-2026-84441 (CVSS 5.5) — A security vulnerability has been detected in Piwigo up to 16.3.0. Affected by this issue is some unknown func…
    CVE-2026-78187 (CVSS 1.3) — A vulnerability has been found in Piwigo 16.3.0. This impacts an unknown function of the component Public Auth…
    CVE-2026-35048 (CVSS 9.8) — The Piwigo installer in versions 16.3.0 and earlier accepts POST parameters for database configuration and wri…
    CVE-2026-27885 (CVSS 7.2) — Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, a SQL Injection vulne…
    CVE-2026-27834 (CVSS 7.2) — Piwigo is an open source photo gallery application for the web. Prior to version 16.3.0, a SQL Injection vulne…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High